21022103011 has 16 divisors (see below), whose sum is σ = 25933436928. Its totient is φ = 16594250400.

The previous prime is 21022102931. The next prime is 21022103021. The reversal of 21022103011 is 11030122012.

It is not a de Polignac number, because 21022103011 - 2⁷ = 21022102883 is a prime.

It is a super-2 number, since 2×21022103011² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 21022102982 and 21022103000.

It is not an unprimeable number, because it can be changed into a prime (21022103021) 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, 228775 + ... + 307216.

It is an arithmetic number, because the mean of its divisors is an integer number (1620839808).

Almost surely, 2^21022103011 is an apocalyptic number.

21022103011 is a deficient number, since it is larger than the sum of its proper divisors (4911333917).

21022103011 is a wasteful number, since it uses less digits than its factorization.

21022103011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536442.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21022103011 its reverse (11030122012), we get a palindrome (32052225023).

The spelling of 21022103011 in words is "twenty-one billion, twenty-two million, one hundred three thousand, eleven".