1222215970 has 8 divisors (see below), whose sum is σ = 2199988764. Its totient is φ = 488886384.

The previous prime is 1222215941. The next prime is 1222215971. The reversal of 1222215970 is 795122221.

It can be written as a sum of positive squares in 2 ways, for example, as 1173816121 + 48399849 = 34261^2 + 6957^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1222215971) 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, 61110789 + ... + 61110808.

Almost surely, 2^1222215970 is an apocalyptic number.

1222215970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222215970 is a deficient number, since it is larger than the sum of its proper divisors (977772794).

1222215970 is a wasteful number, since it uses less digits than its factorization.

1222215970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122221604.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1222215970 is about 34960.2055199909. The cubic root of 1222215970 is about 1069.1762868848.

The spelling of 1222215970 in words is "one billion, two hundred twenty-two million, two hundred fifteen thousand, nine hundred seventy".