20121122002100 has 108 divisors (see below), whose sum is σ = 50793580315296. Its totient is φ = 6898382527680.

The previous prime is 20121122002099. The next prime is 20121122002117. The reversal of 20121122002100 is 120022112102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141083027 + ... + 141225573.

Almost surely, 2^{20121122002100} is an apocalyptic number.

20121122002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20121122002100 is an abundant number, since it is smaller than the sum of its proper divisors (30672458313196).

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

20121122002100 is a wasteful number, since it uses less digits than its factorization.

20121122002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171382 (or 171368 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121122002100 its reverse (120022112102), we get a palindrome (20241144114202).

The spelling of 20121122002100 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-two million, two thousand, one hundred".