1212202000 has 160 divisors (see below), whose sum is σ = 3143129184. Its totient is φ = 450560000.

The previous prime is 1212201997. The next prime is 1212202031. The reversal of 1212202000 is 2022121.

It can be written as a sum of positive squares in 16 ways, for example, as 391723264 + 820478736 = 19792^2 + 28644^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3433824 + ... + 3434176.

Almost surely, 2^1212202000 is an apocalyptic number.

1212202000 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 1212202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571564592).

1212202000 is an abundant number, since it is smaller than the sum of its proper divisors (1930927184).

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

1212202000 is a wasteful number, since it uses less digits than its factorization.

1212202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1212202000 is about 34816.6913993849. The cubic root of 1212202000 is about 1066.2482516909.

Adding to 1212202000 its reverse (2022121), we get a palindrome (1214224121).

The spelling of 1212202000 in words is "one billion, two hundred twelve million, two hundred two thousand".