1222122201021 has 32 divisors (see below), whose sum is σ = 1827643184640. Its totient is φ = 807065280000.

The previous prime is 1222122200993. The next prime is 1222122201023. The reversal of 1222122201021 is 1201022212221.

It is a happy number.

It is not a de Polignac number, because 1222122201021 - 2²⁵ = 1222088646589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222122200985 and 1222122201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222122201023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5134396 + ... + 5367146.

It is an arithmetic number, because the mean of its divisors is an integer number (57113849520).

Almost surely, 2^{1222122201021} is an apocalyptic number.

It is an amenable number.

1222122201021 is a deficient number, since it is larger than the sum of its proper divisors (605520983619).

1222122201021 is a wasteful number, since it uses less digits than its factorization.

1222122201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234594 (or 234588 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222122201021 its reverse (1201022212221), we get a palindrome (2423144413242).

The spelling of 1222122201021 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-two million, two hundred one thousand, twenty-one".