21121334132102 has 16 divisors (see below), whose sum is σ = 31811440649472. Its totient is φ = 10517556707520.

The previous prime is 21121334132089. The next prime is 21121334132123. The reversal of 21121334132102 is 20123143312112.

It is a super-2 number, since 2×21121334132102² (a number of 27 digits) contains 22 as substring.

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, 7860623 + ... + 10199610.

It is an arithmetic number, because the mean of its divisors is an integer number (1988215040592).

Almost surely, 2^{21121334132102} is an apocalyptic number.

21121334132102 is a deficient number, since it is larger than the sum of its proper divisors (10690106517370).

21121334132102 is a wasteful number, since it uses less digits than its factorization.

21121334132102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18062623.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21121334132102 its reverse (20123143312112), we get a palindrome (41244477444214).

The spelling of 21121334132102 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred thirty-four million, one hundred thirty-two thousand, one hundred two".