1210012000 has 96 divisors (see below), whose sum is σ = 2984645664. Its totient is φ = 482112000.

The previous prime is 1210011983. The next prime is 1210012003. The reversal of 1210012000 is 2100121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491595 + ... + 1492405.

It is an arithmetic number, because the mean of its divisors is an integer number (31090059).

Almost surely, 2^1210012000 is an apocalyptic number.

1210012000 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 1210012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1492322832).

1210012000 is an abundant number, since it is smaller than the sum of its proper divisors (1774633664).

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

1210012000 is an equidigital number, since it uses as much as digits as its factorization.

1210012000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1210012000 is about 34785.2267492969. The cubic root of 1210012000 is about 1065.6057594070.

Adding to 1210012000 its reverse (2100121), we get a palindrome (1212112121).

The spelling of 1210012000 in words is "one billion, two hundred ten million, twelve thousand".