1201219998 has 24 divisors (see below), whose sum is σ = 2640700104. Its totient is φ = 364005840.

The previous prime is 1201219951. The next prime is 1201220021. The reversal of 1201219998 is 8999121021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826561 + ... + 828012.

It is an arithmetic number, because the mean of its divisors is an integer number (110029171).

Almost surely, 2^1201219998 is an apocalyptic number.

1201219998 is an abundant number, since it is smaller than the sum of its proper divisors (1439480106).

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

1201219998 is a wasteful number, since it uses less digits than its factorization.

1201219998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654600 (or 1654589 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 1201219998 is about 34658.6208323413. The cubic root of 1201219998 is about 1063.0185698016.

The spelling of 1201219998 in words is "one billion, two hundred one million, two hundred nineteen thousand, nine hundred ninety-eight".