21122020210022 has 8 divisors (see below), whose sum is σ = 31691231991216. Its totient is φ = 10558276212952.

The previous prime is 21122020210021. The next prime is 21122020210051. The reversal of 21122020210022 is 22001202022112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21122020210022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122020210021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1366936373 + ... + 1366951824.

It is an arithmetic number, because the mean of its divisors is an integer number (3961403998902).

Almost surely, 2^{21122020210022} is an apocalyptic number.

21122020210022 is a deficient number, since it is larger than the sum of its proper divisors (10569211781194).

21122020210022 is a wasteful number, since it uses less digits than its factorization.

21122020210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733892062.

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

Adding to 21122020210022 its reverse (22001202022112), we get a palindrome (43123222232134).

The spelling of 21122020210022 in words is "twenty-one trillion, one hundred twenty-two billion, twenty million, two hundred ten thousand, twenty-two".