1022220121 has 8 divisors (see below), whose sum is σ = 1158792320. Its totient is φ = 893925072.

The previous prime is 1022220109. The next prime is 1022220137. The reversal of 1022220121 is 1210222201.

It is a happy number.

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

It is not a de Polignac number, because 1022220121 - 2⁷ = 1022219993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022220161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2069025 + ... + 2069518.

It is an arithmetic number, because the mean of its divisors is an integer number (144849040).

Almost surely, 2^1022220121 is an apocalyptic number.

It is an amenable number.

1022220121 is a deficient number, since it is larger than the sum of its proper divisors (136572199).

1022220121 is a wasteful number, since it uses less digits than its factorization.

1022220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138575.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1022220121 is about 31972.1772952672. The cubic root of 1022220121 is about 1007.3525150317.

Adding to 1022220121 its reverse (1210222201), we get a palindrome (2232442322).

The spelling of 1022220121 in words is "one billion, twenty-two million, two hundred twenty thousand, one hundred twenty-one".