20012102121201 has 16 divisors (see below), whose sum is σ = 26694474283008. Its totient is φ = 13335566142800.

The previous prime is 20012102121197. The next prime is 20012102121251. The reversal of 20012102121201 is 10212120121002.

It is a cyclic number.

It is not a de Polignac number, because 20012102121201 - 2² = 20012102121197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012102121251) 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, 258358660 + ... + 258436106.

It is an arithmetic number, because the mean of its divisors is an integer number (1668404642688).

Almost surely, 2^{20012102121201} is an apocalyptic number.

It is an amenable number.

20012102121201 is a deficient number, since it is larger than the sum of its proper divisors (6682372161807).

20012102121201 is a wasteful number, since it uses less digits than its factorization.

20012102121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114012.

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

Adding to 20012102121201 its reverse (10212120121002), we get a palindrome (30224222242203).

The spelling of 20012102121201 in words is "twenty trillion, twelve billion, one hundred two million, one hundred twenty-one thousand, two hundred one".