21011101022 has 8 divisors (see below), whose sum is σ = 31520575872. Its totient is φ = 10504242400.

The previous prime is 21011101009. The next prime is 21011101103. The reversal of 21011101022 is 22010111012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21011100994 and 21011101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633854 + ... + 666177.

It is an arithmetic number, because the mean of its divisors is an integer number (3940071984).

Almost surely, 2^21011101022 is an apocalyptic number.

21011101022 is a deficient number, since it is larger than the sum of its proper divisors (10509474850).

21011101022 is a wasteful number, since it uses less digits than its factorization.

21011101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308114.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21011101022 its reverse (22010111012), we get a palindrome (43021212034).

The spelling of 21011101022 in words is "twenty-one billion, eleven million, one hundred one thousand, twenty-two".