1212000 has 96 divisors (see below), whose sum is σ = 4009824. Its totient is φ = 320000.

The previous prime is 1211999. The next prime is 1212011. The reversal of 1212000 is 2121.

1212000 = T₇₂ + T₇₃ + ... + T₁₉₆.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11950 + ... + 12050.

It is an arithmetic number, because the mean of its divisors is an integer number (41769).

2^1212000 is an apocalyptic number.

1212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2004912).

1212000 is an abundant number, since it is smaller than the sum of its proper divisors (2797824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212000 is a wasteful number, since it uses less digits than its factorization.

1212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1212000 is about 1100.9087155618. The cubic root of 1212000 is about 106.6189022258.

Adding to 1212000 its reverse (2121), we get a palindrome (1214121).

The spelling of 1212000 in words is "one million, two hundred twelve thousand".