20221211001 has 16 divisors (see below), whose sum is σ = 28150485120. Its totient is φ = 12887064960.

The previous prime is 20221210993. The next prime is 20221211033. The reversal of 20221211001 is 10011212202.

It is not a de Polignac number, because 20221211001 - 2³ = 20221210993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221211071) 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, 32181 + ... + 203661.

It is an arithmetic number, because the mean of its divisors is an integer number (1759405320).

Almost surely, 2^20221211001 is an apocalyptic number.

It is an amenable number.

20221211001 is a deficient number, since it is larger than the sum of its proper divisors (7929274119).

20221211001 is a wasteful number, since it uses less digits than its factorization.

20221211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173216.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20221211001 its reverse (10011212202), we get a palindrome (30232423203).

The spelling of 20221211001 in words is "twenty billion, two hundred twenty-one million, two hundred eleven thousand, one".