21121001361022 has 16 divisors (see below), whose sum is σ = 33551422016112. Its totient is φ = 9937427437440.

The previous prime is 21121001360989. The next prime is 21121001361167. The reversal of 21121001361022 is 22016310012112.

It is a junction number, because it is equal to n+sod(n) for n = 21121001360984 and 21121001361002.

It is a congruent number.

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, 58170129 + ... + 58532092.

It is an arithmetic number, because the mean of its divisors is an integer number (2096963876007).

Almost surely, 2^{21121001361022} is an apocalyptic number.

21121001361022 is a deficient number, since it is larger than the sum of its proper divisors (12430420655090).

21121001361022 is a wasteful number, since it uses less digits than its factorization.

21121001361022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116707563.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 21121001361022 its reverse (22016310012112), we get a palindrome (43137311373134).

The spelling of 21121001361022 in words is "twenty-one trillion, one hundred twenty-one billion, one million, three hundred sixty-one thousand, twenty-two".