121031331331 has 32 divisors (see below), whose sum is σ = 133619673600. Its totient is φ = 109273317120.

The previous prime is 121031331329. The next prime is 121031331353. The reversal of 121031331331 is 133133130121.

It is a cyclic number.

It is not a de Polignac number, because 121031331331 - 2¹ = 121031331329 is a prime.

It is a super-2 number, since 2×121031331331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121031331731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6235800 + ... + 6255178.

It is an arithmetic number, because the mean of its divisors is an integer number (4175614800).

Almost surely, 2^121031331331 is an apocalyptic number.

121031331331 is a deficient number, since it is larger than the sum of its proper divisors (12588342269).

121031331331 is a wasteful number, since it uses less digits than its factorization.

121031331331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19659.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 121031331331 its reverse (133133130121), we get a palindrome (254164461452).

The spelling of 121031331331 in words is "one hundred twenty-one billion, thirty-one million, three hundred thirty-one thousand, three hundred thirty-one".