121862698461 has 24 divisors (see below), whose sum is σ = 201236207744. Its totient is φ = 69612968160.

The previous prime is 121862698429. The next prime is 121862698481. The reversal of 121862698461 is 164896268121.

121862698461 is a `hidden beast` number, since 1 + 2 + 1 + 8 + 626 + 9 + 8 + 4 + 6 + 1 = 666.

It is not a de Polignac number, because 121862698461 - 2⁵ = 121862698429 is a prime.

It is a super-2 number, since 2×121862698461² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121862698398 and 121862698407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121862698411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123121 + ... + 508806.

Almost surely, 2^121862698461 is an apocalyptic number.

It is an amenable number.

121862698461 is a deficient number, since it is larger than the sum of its proper divisors (79373509283).

121862698461 is a wasteful number, since it uses less digits than its factorization.

121862698461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635001 (or 634998 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The spelling of 121862698461 in words is "one hundred twenty-one billion, eight hundred sixty-two million, six hundred ninety-eight thousand, four hundred sixty-one".