21120001002022 has 16 divisors (see below), whose sum is σ = 34119032789520. Its totient is φ = 9747090457632.

The previous prime is 21120001002017. The next prime is 21120001002031. The reversal of 21120001002022 is 22020010002112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 21120001001993 and 21120001002011.

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, 24667348 + ... + 25509175.

It is an arithmetic number, because the mean of its divisors is an integer number (2132439549345).

Almost surely, 2^{21120001002022} is an apocalyptic number.

21120001002022 is a deficient number, since it is larger than the sum of its proper divisors (12999031787498).

21120001002022 is a wasteful number, since it uses less digits than its factorization.

21120001002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50192727.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21120001002022 its reverse (22020010002112), we get a palindrome (43140011004134).

The spelling of 21120001002022 in words is "twenty-one trillion, one hundred twenty billion, one million, two thousand, twenty-two".