12001211021012 has 24 divisors (see below), whose sum is σ = 21083445743976. Its totient is φ = 5977380699648.

The previous prime is 12001211020999. The next prime is 12001211021039. The reversal of 12001211021012 is 21012011210021.

It can be written as a sum of positive squares in 4 ways, for example, as 542146525636 + 11459064495376 = 736306^2 + 3385124^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2834048 + ... + 5659880.

It is an arithmetic number, because the mean of its divisors is an integer number (878476905999).

Almost surely, 2^{12001211021012} is an apocalyptic number.

It is an amenable number.

12001211021012 is a deficient number, since it is larger than the sum of its proper divisors (9082234722964).

12001211021012 is a wasteful number, since it uses less digits than its factorization.

12001211021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829947 (or 2829945 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12001211021012 its reverse (21012011210021), we get a palindrome (33013222231033).

The spelling of 12001211021012 in words is "twelve trillion, one billion, two hundred eleven million, twenty-one thousand, twelve".