1221122002022 has 32 divisors (see below), whose sum is σ = 2023289150400. Its totient is φ = 549249667200.

The previous prime is 1221122002003. The next prime is 1221122002033. The reversal of 1221122002022 is 2202002211221.

It is a happy number.

It is a super-2 number, since 2×1221122002022² (a number of 25 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 in 15 ways as a sum of consecutive naturals, for example, 2768354 + ... + 3178997.

It is an arithmetic number, because the mean of its divisors is an integer number (63227785950).

Almost surely, 2^{1221122002022} is an apocalyptic number.

1221122002022 is a deficient number, since it is larger than the sum of its proper divisors (802167148378).

1221122002022 is a wasteful number, since it uses less digits than its factorization.

1221122002022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5947568.

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

Adding to 1221122002022 its reverse (2202002211221), we get a palindrome (3423124213243).

The spelling of 1221122002022 in words is "one trillion, two hundred twenty-one billion, one hundred twenty-two million, two thousand, twenty-two".