1122201021 has 4 divisors (see below), whose sum is σ = 1496268032. Its totient is φ = 748134012.

The previous prime is 1122201013. The next prime is 1122201049. The reversal of 1122201021 is 1201022211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1122201021 - 2³ = 1122201013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122200988 and 1122201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122201121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187033501 + ... + 187033506.

It is an arithmetic number, because the mean of its divisors is an integer number (374067008).

Almost surely, 2^1122201021 is an apocalyptic number.

It is an amenable number.

1122201021 is a deficient number, since it is larger than the sum of its proper divisors (374067011).

1122201021 is an equidigital number, since it uses as much as digits as its factorization.

1122201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374067010.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1122201021 is about 33499.2689621729. The cubic root of 1122201021 is about 1039.1786602580.

Adding to 1122201021 its reverse (1201022211), we get a palindrome (2323223232).

The spelling of 1122201021 in words is "one billion, one hundred twenty-two million, two hundred one thousand, twenty-one".