1216220962 has 16 divisors (see below), whose sum is σ = 1990735200. Its totient is φ = 552673440.

The previous prime is 1216220939. The next prime is 1216221001. The reversal of 1216220962 is 2690226121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119614 + ... + 129382.

It is an arithmetic number, because the mean of its divisors is an integer number (124420950).

Almost surely, 2^1216220962 is an apocalyptic number.

1216220962 is a deficient number, since it is larger than the sum of its proper divisors (774514238).

1216220962 is a wasteful number, since it uses less digits than its factorization.

1216220962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1216220962 is about 34874.3596643723. The cubic root of 1216220962 is about 1067.4253063808.

It can be divided in two parts, 12162 and 20962, that added together give a square (33124 = 182²).

The spelling of 1216220962 in words is "one billion, two hundred sixteen million, two hundred twenty thousand, nine hundred sixty-two".