121165130426406 has 32 divisors (see below), whose sum is σ = 279910889543808. Its totient is φ = 34556899943040.

The previous prime is 121165130426381. The next prime is 121165130426441. The reversal of 121165130426406 is 604624031561121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53995155040 + ... + 53995157283.

It is an arithmetic number, because the mean of its divisors is an integer number (8747215298244).

Almost surely, 2^{121165130426406} is an apocalyptic number.

121165130426406 is an abundant number, since it is smaller than the sum of its proper divisors (158745759117402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121165130426406 is a wasteful number, since it uses less digits than its factorization.

121165130426406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107990312356.

The product of its (nonzero) digits is 207360, while the sum is 42.

Adding to 121165130426406 its reverse (604624031561121), we get a palindrome (725789161987527).

The spelling of 121165130426406 in words is "one hundred twenty-one trillion, one hundred sixty-five billion, one hundred thirty million, four hundred twenty-six thousand, four hundred six".