20211202011 has 128 divisors (see below), whose sum is σ = 37548951552. Its totient is φ = 9331200000.

The previous prime is 20211202003. The next prime is 20211202049. The reversal of 20211202011 is 11020211202.

It is not a de Polignac number, because 20211202011 - 2³ = 20211202003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211202001) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11221311 + ... + 11223111.

It is an arithmetic number, because the mean of its divisors is an integer number (293351184).

Almost surely, 2^20211202011 is an apocalyptic number.

20211202011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20211202011 is a deficient number, since it is larger than the sum of its proper divisors (17337749541).

20211202011 is a wasteful number, since it uses less digits than its factorization.

20211202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973.

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

Adding to 20211202011 its reverse (11020211202), we get a palindrome (31231413213).

It can be divided in two parts, 20211 and 202011, that added together give a palindrome (222222).

The spelling of 20211202011 in words is "twenty billion, two hundred eleven million, two hundred two thousand, eleven".