21101011102122 has 32 divisors (see below), whose sum is σ = 48233966064000. Its totient is φ = 6028474871808.

The previous prime is 21101011102121. The next prime is 21101011102141. The reversal of 21101011102122 is 22120111010112.

It is a happy number.

It is a super-2 number, since 2×21101011102122² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21101011102121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15395047 + ... + 16709562.

It is an arithmetic number, because the mean of its divisors is an integer number (1507311439500).

Almost surely, 2^{21101011102122} is an apocalyptic number.

21101011102122 is an abundant number, since it is smaller than the sum of its proper divisors (27132954961878).

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

21101011102122 is a wasteful number, since it uses less digits than its factorization.

21101011102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32120270.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 21101011102122 its reverse (22120111010112), we get a palindrome (43221122112234).

The spelling of 21101011102122 in words is "twenty-one trillion, one hundred one billion, eleven million, one hundred two thousand, one hundred twenty-two".