20121220101102 has 32 divisors (see below), whose sum is σ = 40337355801600. Its totient is φ = 6691269792768.

The previous prime is 20121220101083. The next prime is 20121220101139. The reversal of 20121220101102 is 20110102212102.

It is a super-2 number, since 2×20121220101102² (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 15 ways as a sum of consecutive naturals, for example, 3171049 + ... + 7092107.

It is an arithmetic number, because the mean of its divisors is an integer number (1260542368800).

Almost surely, 2^{20121220101102} is an apocalyptic number.

20121220101102 is an abundant number, since it is smaller than the sum of its proper divisors (20216135700498).

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

20121220101102 is a wasteful number, since it uses less digits than its factorization.

20121220101102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923080.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20121220101102 its reverse (20110102212102), we get a palindrome (40231322313204).

The spelling of 20121220101102 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty million, one hundred one thousand, one hundred two".