1113222021 has 8 divisors (see below), whose sum is σ = 1490952960. Its totient is φ = 738819552.

The previous prime is 1113222013. The next prime is 1113222031. The reversal of 1113222021 is 1202223111.

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

It is not a de Polignac number, because 1113222021 - 2³ = 1113222013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113222031) 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, 831336 + ... + 832673.

It is an arithmetic number, because the mean of its divisors is an integer number (186369120).

Almost surely, 2^1113222021 is an apocalyptic number.

It is an amenable number.

1113222021 is a deficient number, since it is larger than the sum of its proper divisors (377730939).

1113222021 is a wasteful number, since it uses less digits than its factorization.

1113222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664235.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1113222021 is about 33364.9819571358. The cubic root of 1113222021 is about 1036.3996625022.

Adding to 1113222021 its reverse (1202223111), we get a palindrome (2315445132).

It can be divided in two parts, 11132 and 22021, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 1113222021 in words is "one billion, one hundred thirteen million, two hundred twenty-two thousand, twenty-one".