21202033231012 has 12 divisors (see below), whose sum is σ = 38008522987596. Its totient is φ = 10342455234560.

The previous prime is 21202033231003. The next prime is 21202033231039. The reversal of 21202033231012 is 21013233020212.

It can be written as a sum of positive squares in 2 ways, for example, as 5471735002276 + 15730298228736 = 2339174^2 + 3966144^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64640345053 + ... + 64640345380.

It is an arithmetic number, because the mean of its divisors is an integer number (3167376915633).

Almost surely, 2^{21202033231012} is an apocalyptic number.

It is an amenable number.

21202033231012 is a deficient number, since it is larger than the sum of its proper divisors (16806489756584).

21202033231012 is a wasteful number, since it uses less digits than its factorization.

21202033231012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129280690478 (or 129280690476 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21202033231012 its reverse (21013233020212), we get a palindrome (42215266251224).

The spelling of 21202033231012 in words is "twenty-one trillion, two hundred two billion, thirty-three million, two hundred thirty-one thousand, twelve".