1210021011012 has 48 divisors (see below), whose sum is σ = 3080135245824. Its totient is φ = 366663300000.

The previous prime is 1210021010999. The next prime is 1210021011019. The reversal of 1210021011012 is 2101101200121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1210021011019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6051637 + ... + 6248387.

It is an arithmetic number, because the mean of its divisors is an integer number (64169484288).

Almost surely, 2^{1210021011012} is an apocalyptic number.

1210021011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1210021011012 is an abundant number, since it is smaller than the sum of its proper divisors (1870114234812).

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

1210021011012 is a wasteful number, since it uses less digits than its factorization.

1210021011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243360 (or 243358 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210021011012 its reverse (2101101200121), we get a palindrome (3311122211133).

The spelling of 1210021011012 in words is "one trillion, two hundred ten billion, twenty-one million, eleven thousand, twelve".