121040400222 has 32 divisors (see below), whose sum is σ = 307404192000. Its totient is φ = 34582971384.

The previous prime is 121040400211. The next prime is 121040400223. The reversal of 121040400222 is 222004040121.

121040400222 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 40 + 400 + 222 = 666.

121040400222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121040400195 and 121040400204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040400223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160105972 + ... + 160106727.

It is an arithmetic number, because the mean of its divisors is an integer number (9606381000).

Almost surely, 2^121040400222 is an apocalyptic number.

121040400222 is an abundant number, since it is smaller than the sum of its proper divisors (186363791778).

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

121040400222 is a wasteful number, since it uses less digits than its factorization.

121040400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320212717 (or 320212711 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 121040400222 its reverse (222004040121), we get a palindrome (343044440343).

The spelling of 121040400222 in words is "one hundred twenty-one billion, forty million, four hundred thousand, two hundred twenty-two".