1227999801 has 16 divisors (see below), whose sum is σ = 1871760384. Its totient is φ = 701518224.

The previous prime is 1227999793. The next prime is 1227999821. The reversal of 1227999801 is 1089997221.

It is not a de Polignac number, because 1227999801 - 2³ = 1227999793 is a prime.

It is a super-2 number, since 2×1227999801² = 3015967022512079202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1227999821) 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, 105850 + ... + 116876.

It is an arithmetic number, because the mean of its divisors is an integer number (116985024).

Almost surely, 2^1227999801 is an apocalyptic number.

It is an amenable number.

1227999801 is a deficient number, since it is larger than the sum of its proper divisors (643760583).

1227999801 is a wasteful number, since it uses less digits than its factorization.

1227999801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16340.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 1227999801 is about 35042.8280964879. The cubic root of 1227999801 is about 1070.8601698285.

The spelling of 1227999801 in words is "one billion, two hundred twenty-seven million, nine hundred ninety-nine thousand, eight hundred one".