1222942152 has 64 divisors (see below), whose sum is σ = 3119175360. Its totient is φ = 399456000.

The previous prime is 1222942139. The next prime is 1222942153. The reversal of 1222942152 is 2512492221.

It is a super-2 number, since 2×1222942152² = 2991175014276782208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222942153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427527 + ... + 430377.

It is an arithmetic number, because the mean of its divisors is an integer number (48737115).

Almost surely, 2^1222942152 is an apocalyptic number.

1222942152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222942152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559587680).

1222942152 is an abundant number, since it is smaller than the sum of its proper divisors (1896233208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222942152 is a wasteful number, since it uses less digits than its factorization.

1222942152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214 (or 3210 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 1222942152 is about 34970.5898148716. The cubic root of 1222942152 is about 1069.3879960193.

The spelling of 1222942152 in words is "one billion, two hundred twenty-two million, nine hundred forty-two thousand, one hundred fifty-two".