21122000221022 has 4 divisors (see below), whose sum is σ = 31683000331536. Its totient is φ = 10561000110510.

The previous prime is 21122000220967. The next prime is 21122000221037. The reversal of 21122000221022 is 22012200022112.

It is a happy number.

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

It is a super-2 number, since 2×21122000221022² (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, 5280500055254 + ... + 5280500055257.

It is an arithmetic number, because the mean of its divisors is an integer number (7920750082884).

Almost surely, 2^{21122000221022} is an apocalyptic number.

21122000221022 is a deficient number, since it is larger than the sum of its proper divisors (10561000110514).

21122000221022 is a wasteful number, since it uses less digits than its factorization.

21122000221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10561000110513.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21122000221022 its reverse (22012200022112), we get a palindrome (43134200243134).

The spelling of 21122000221022 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred twenty-one thousand, twenty-two".