1122202212021 has 24 divisors (see below), whose sum is σ = 1785486795456. Its totient is φ = 673519415040.

The previous prime is 1122202212017. The next prime is 1122202212083. The reversal of 1122202212021 is 1202122022211.

It is a happy number.

It is not a de Polignac number, because 1122202212021 - 2² = 1122202212017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1122202211985 and 1122202212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122202212221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55015900 + ... + 55036293.

It is an arithmetic number, because the mean of its divisors is an integer number (74395283144).

Almost surely, 2^{1122202212021} is an apocalyptic number.

1122202212021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122202212021 is a deficient number, since it is larger than the sum of its proper divisors (663284583435).

1122202212021 is a wasteful number, since it uses less digits than its factorization.

1122202212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110052313 (or 110052310 counting only the distinct ones).

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

Adding to 1122202212021 its reverse (1202122022211), we get a palindrome (2324324234232).

The spelling of 1122202212021 in words is "one trillion, one hundred twenty-two billion, two hundred two million, two hundred twelve thousand, twenty-one".