1201231215 has 40 divisors (see below), whose sum is σ = 2188663488. Its totient is φ = 630141120.

The previous prime is 1201231211. The next prime is 1201231249. The reversal of 1201231215 is 5121321021.

It is not a de Polignac number, because 1201231215 - 2² = 1201231211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201231211) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 394 + ... + 49016.

Almost surely, 2^1201231215 is an apocalyptic number.

1201231215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1201231215 is a deficient number, since it is larger than the sum of its proper divisors (987432273).

1201231215 is an equidigital number, since it uses as much as digits as its factorization.

1201231215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48701 (or 48692 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1201231215 is about 34658.7826531746. The cubic root of 1201231215 is about 1063.0218786160.

Adding to 1201231215 its reverse (5121321021), we get a palindrome (6322552236).

The spelling of 1201231215 in words is "one billion, two hundred one million, two hundred thirty-one thousand, two hundred fifteen".