1215412120031 has 16 divisors (see below), whose sum is σ = 1287182284800. Its totient is φ = 1144432411200.

The previous prime is 1215412119989. The next prime is 1215412120051. The reversal of 1215412120031 is 1300212145121.

It is not a de Polignac number, because 1215412120031 - 2⁶ = 1215412119967 is a prime.

It is a super-2 number, since 2×1215412120031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1215412119979 and 1215412120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215412120051) 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, 4106555 + ... + 4392563.

It is an arithmetic number, because the mean of its divisors is an integer number (80448892800).

Almost surely, 2^{1215412120031} is an apocalyptic number.

1215412120031 is a deficient number, since it is larger than the sum of its proper divisors (71770164769).

1215412120031 is a wasteful number, since it uses less digits than its factorization.

1215412120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287390.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 1215412120031 its reverse (1300212145121), we get a palindrome (2515624265152).

The spelling of 1215412120031 in words is "one trillion, two hundred fifteen billion, four hundred twelve million, one hundred twenty thousand, thirty-one".