21121033311002 has 24 divisors (see below), whose sum is σ = 33860010715200. Its totient is φ = 9878058190728.

The previous prime is 21121033310987. The next prime is 21121033311011. The reversal of 21121033311002 is 20011333012112.

It is a happy number.

It is a super-2 number, since 2×21121033311002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185091752 + ... + 185205827.

It is an arithmetic number, because the mean of its divisors is an integer number (1410833779800).

Almost surely, 2^{21121033311002} is an apocalyptic number.

21121033311002 is a deficient number, since it is larger than the sum of its proper divisors (12738977404198).

21121033311002 is a wasteful number, since it uses less digits than its factorization.

21121033311002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370297698 (or 370297679 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21121033311002 its reverse (20011333012112), we get a palindrome (41132366323114).

The spelling of 21121033311002 in words is "twenty-one trillion, one hundred twenty-one billion, thirty-three million, three hundred eleven thousand, two".