21111020101022 has 8 divisors (see below), whose sum is σ = 32112537618672. Its totient is φ = 10406840894800.

The previous prime is 21111020101019. The next prime is 21111020101133. The reversal of 21111020101022 is 22010102011112.

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 = 21111020100988 and 21111020101006.

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, 74334577679 + ... + 74334577962.

It is an arithmetic number, because the mean of its divisors is an integer number (4014067202334).

Almost surely, 2^{21111020101022} is an apocalyptic number.

21111020101022 is a deficient number, since it is larger than the sum of its proper divisors (11001517517650).

21111020101022 is a wasteful number, since it uses less digits than its factorization.

21111020101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148669155714.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21111020101022 its reverse (22010102011112), we get a palindrome (43121122112134).

The spelling of 21111020101022 in words is "twenty-one trillion, one hundred eleven billion, twenty million, one hundred one thousand, twenty-two".