20012121121102 has 64 divisors (see below), whose sum is σ = 33626898835200. Its totient is φ = 8855133166080.

The previous prime is 20012121121079. The next prime is 20012121121117. The reversal of 20012121121102 is 20112112121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252788758 + ... + 252867910.

It is an arithmetic number, because the mean of its divisors is an integer number (525420294300).

Almost surely, 2^{20012121121102} is an apocalyptic number.

20012121121102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012121121102 is a deficient number, since it is larger than the sum of its proper divisors (13614777714098).

20012121121102 is a wasteful number, since it uses less digits than its factorization.

20012121121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81121.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20012121121102 its reverse (20112112121002), we get a palindrome (40124233242104).

The spelling of 20012121121102 in words is "twenty trillion, twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred two".