1202222112021 has 12 divisors (see below), whose sum is σ = 1984620629472. Its totient is φ = 686984063976.

The previous prime is 1202222112001. The next prime is 1202222112023. The reversal of 1202222112021 is 1202112222021.

It is a happy number.

It is not a de Polignac number, because 1202222112021 - 2⁶ = 1202222111957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1202222111985 and 1202222112003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202222112023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9541445271 + ... + 9541445396.

It is an arithmetic number, because the mean of its divisors is an integer number (165385052456).

Almost surely, 2^{1202222112021} is an apocalyptic number.

It is an amenable number.

1202222112021 is a deficient number, since it is larger than the sum of its proper divisors (782398517451).

1202222112021 is a wasteful number, since it uses less digits than its factorization.

1202222112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19082890680 (or 19082890677 counting only the distinct ones).

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

Adding to 1202222112021 its reverse (1202112222021), we get a palindrome (2404334334042).

The spelling of 1202222112021 in words is "one trillion, two hundred two billion, two hundred twenty-two million, one hundred twelve thousand, twenty-one".