1215114310421 has 16 divisors (see below), whose sum is σ = 1396189066560. Its totient is φ = 1045878065280.

The previous prime is 1215114310387. The next prime is 1215114310439. The reversal of 1215114310421 is 1240134115121.

It is a cyclic number.

It is not a de Polignac number, because 1215114310421 - 2³⁴ = 1197934441237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215114310321) 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, 1408046 + ... + 2100671.

It is an arithmetic number, because the mean of its divisors is an integer number (87261816660).

Almost surely, 2^{1215114310421} is an apocalyptic number.

1215114310421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1215114310421 is a deficient number, since it is larger than the sum of its proper divisors (181074756139).

1215114310421 is a wasteful number, since it uses less digits than its factorization.

1215114310421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3510404.

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 1215114310421 its reverse (1240134115121), we get a palindrome (2455248425542).

The spelling of 1215114310421 in words is "one trillion, two hundred fifteen billion, one hundred fourteen million, three hundred ten thousand, four hundred twenty-one".