22001021121022 has 4 divisors (see below), whose sum is σ = 33001531681536. Its totient is φ = 11000510560510.

The previous prime is 22001021121019. The next prime is 22001021121059. The reversal of 22001021121022 is 22012112010022.

It is a happy number.

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

It is a super-2 number, since 2×22001021121022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22001021120987 and 22001021121005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500255280254 + ... + 5500255280257.

It is an arithmetic number, because the mean of its divisors is an integer number (8250382920384).

Almost surely, 2^{22001021121022} is an apocalyptic number.

22001021121022 is a deficient number, since it is larger than the sum of its proper divisors (11000510560514).

22001021121022 is a wasteful number, since it uses less digits than its factorization.

22001021121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000510560513.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22001021121022 its reverse (22012112010022), we get a palindrome (44013133131044).

The spelling of 22001021121022 in words is "twenty-two trillion, one billion, twenty-one million, one hundred twenty-one thousand, twenty-two".