1215305250201 has 40 divisors (see below), whose sum is σ = 2075214476544. Its totient is φ = 694323705600.

The previous prime is 1215305250163. The next prime is 1215305250281. The reversal of 1215305250201 is 1020525035121.

1215305250201 is a `hidden beast` number, since 1 + 2 + 153 + 0 + 5 + 2 + 502 + 0 + 1 = 666.

It is not a de Polignac number, because 1215305250201 - 2¹⁷ = 1215305119129 is a prime.

It is a super-2 number, since 2×1215305250201² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1215305250281) 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, 2713776 + ... + 3129726.

Almost surely, 2^{1215305250201} is an apocalyptic number.

It is an amenable number.

1215305250201 is a deficient number, since it is larger than the sum of its proper divisors (859909226343).

1215305250201 is an equidigital number, since it uses as much as digits as its factorization.

1215305250201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421123 (or 421114 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 1215305250201 in words is "one trillion, two hundred fifteen billion, three hundred five million, two hundred fifty thousand, two hundred one".