121402101231 has 24 divisors (see below), whose sum is σ = 177151867776. Its totient is φ = 80107874640.

The previous prime is 121402101209. The next prime is 121402101311. The reversal of 121402101231 is 132101204121.

121402101231 is a `hidden beast` number, since 1 + 21 + 402 + 10 + 1 + 231 = 666.

It is not a de Polignac number, because 121402101231 - 2⁹ = 121402100719 is a prime.

It is a super-2 number, since 2×121402101231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121402101031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1831636 + ... + 1896758.

It is an arithmetic number, because the mean of its divisors is an integer number (7381327824).

Almost surely, 2^121402101231 is an apocalyptic number.

121402101231 is a deficient number, since it is larger than the sum of its proper divisors (55749766545).

121402101231 is a wasteful number, since it uses less digits than its factorization.

121402101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67243 (or 67240 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121402101231 its reverse (132101204121), we get a palindrome (253503305352).

The spelling of 121402101231 in words is "one hundred twenty-one billion, four hundred two million, one hundred one thousand, two hundred thirty-one".