121013731 has 2 divisors, whose sum is σ = 121013732. Its totient is φ = 121013730.

The previous prime is 121013719. The next prime is 121013759. The reversal of 121013731 is 137310121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121013731 - 2⁵ = 121013699 is a prime.

It is a super-2 number, since 2×121013731² = 29288646181080722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121013699 and 121013708.

It is not a weakly prime, because it can be changed into another prime (121013131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506865 + 60506866.

It is an arithmetic number, because the mean of its divisors is an integer number (60506866).

Almost surely, 2^121013731 is an apocalyptic number.

121013731 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013731 is an equidigital number, since it uses as much as digits as its factorization.

121013731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 121013731 is about 11000.6241186580. The cubic root of 121013731 is about 494.6274529083.

Adding to 121013731 its reverse (137310121), we get a palindrome (258323852).

It can be divided in two parts, 1210 and 13731, that added together give a palindrome (14941).

The spelling of 121013731 in words is "one hundred twenty-one million, thirteen thousand, seven hundred thirty-one".