21121202101022 has 4 divisors (see below), whose sum is σ = 31681803151536. Its totient is φ = 10560601050510.

The previous prime is 21121202101009. The next prime is 21121202101049. The reversal of 21121202101022 is 22010120212112.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21121202101022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280300525254 + ... + 5280300525257.

It is an arithmetic number, because the mean of its divisors is an integer number (7920450787884).

Almost surely, 2^{21121202101022} is an apocalyptic number.

21121202101022 is a deficient number, since it is larger than the sum of its proper divisors (10560601050514).

21121202101022 is a wasteful number, since it uses less digits than its factorization.

21121202101022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560601050513.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21121202101022 its reverse (22010120212112), we get a palindrome (43131322313134).

The spelling of 21121202101022 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred two million, one hundred one thousand, twenty-two".