20000212122021 has 16 divisors (see below), whose sum is σ = 26674236671040. Its totient is φ = 13329831681920.

The previous prime is 20000212121971. The next prime is 20000212122031. The reversal of 20000212122021 is 12022121200002.

It is a cyclic number.

It is not a de Polignac number, because 20000212122021 - 2³¹ = 19998064638373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000212122031) 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, 173828650 + ... + 173943668.

It is an arithmetic number, because the mean of its divisors is an integer number (1667139791940).

Almost surely, 2^{20000212122021} is an apocalyptic number.

It is an amenable number.

20000212122021 is a deficient number, since it is larger than the sum of its proper divisors (6674024549019).

20000212122021 is a wasteful number, since it uses less digits than its factorization.

20000212122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130356.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20000212122021 its reverse (12022121200002), we get a palindrome (32022333322023).

The spelling of 20000212122021 in words is "twenty trillion, two hundred twelve million, one hundred twenty-two thousand, twenty-one".