121192284638 has 16 divisors (see below), whose sum is σ = 181991036304. Its totient is φ = 60528637440.

The previous prime is 121192284583. The next prime is 121192284649. The reversal of 121192284638 is 836482291121.

It is a junction number, because it is equal to n+sod(n) for n = 121192284592 and 121192284601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13326473 + ... + 13335563.

It is an arithmetic number, because the mean of its divisors is an integer number (11374439769).

Almost surely, 2^121192284638 is an apocalyptic number.

121192284638 is a deficient number, since it is larger than the sum of its proper divisors (60798751666).

121192284638 is a wasteful number, since it uses less digits than its factorization.

121192284638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15787.

The product of its digits is 331776, while the sum is 47.

The spelling of 121192284638 in words is "one hundred twenty-one billion, one hundred ninety-two million, two hundred eighty-four thousand, six hundred thirty-eight".