20121100102 has 16 divisors (see below), whose sum is σ = 31225773600. Its totient is φ = 9712584000.

The previous prime is 20121100079. The next prime is 20121100117. The reversal of 20121100102 is 20100112102.

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, 947602 + ... + 968602.

It is an arithmetic number, because the mean of its divisors is an integer number (1951610850).

Almost surely, 2^20121100102 is an apocalyptic number.

20121100102 is a deficient number, since it is larger than the sum of its proper divisors (11104673498).

20121100102 is a wasteful number, since it uses less digits than its factorization.

20121100102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37551.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20121100102 its reverse (20100112102), we get a palindrome (40221212204).

The spelling of 20121100102 in words is "twenty billion, one hundred twenty-one million, one hundred thousand, one hundred two".