20211111010 has 16 divisors (see below), whose sum is σ = 36740199672. Its totient is φ = 8004400000.

The previous prime is 20211110929. The next prime is 20211111023. The reversal of 20211111010 is 1011111202.

It can be written as a sum of positive squares in 4 ways, for example, as 20103553369 + 107557641 = 141787^2 + 10371^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10004491 + ... + 10006510.

Almost surely, 2^20211111010 is an apocalyptic number.

20211111010 is a deficient number, since it is larger than the sum of its proper divisors (16529088662).

20211111010 is a wasteful number, since it uses less digits than its factorization.

20211111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20011109.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20211111010 its reverse (1011111202), we get a palindrome (21222222212).

The spelling of 20211111010 in words is "twenty billion, two hundred eleven million, one hundred eleven thousand, ten".