20212122201 has 16 divisors (see below), whose sum is σ = 27700788864. Its totient is φ = 13099705344.

The previous prime is 20212122193. The next prime is 20212122209. The reversal of 20212122201 is 10222121202.

It is an interprime number because it is at equal distance from previous prime (20212122193) and next prime (20212122209).

It is not a de Polignac number, because 20212122201 - 2³ = 20212122193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212122209) 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, 60276 + ... + 209898.

It is an arithmetic number, because the mean of its divisors is an integer number (1731299304).

Almost surely, 2^20212122201 is an apocalyptic number.

It is an amenable number.

20212122201 is a deficient number, since it is larger than the sum of its proper divisors (7488666663).

20212122201 is a wasteful number, since it uses less digits than its factorization.

20212122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150880.

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

Adding to 20212122201 its reverse (10222121202), we get a palindrome (30434243403).

Subtracting from 20212122201 its reverse (10222121202), we obtain a palindrome (9990000999).

The spelling of 20212122201 in words is "twenty billion, two hundred twelve million, one hundred twenty-two thousand, two hundred one".