121222131309 has 32 divisors (see below), whose sum is σ = 184013988480. Its totient is φ = 78824188800.

The previous prime is 121222131271. The next prime is 121222131313. The reversal of 121222131309 is 903131222121.

121222131309 is a `hidden beast` number, since 1 + 2 + 1 + 222 + 131 + 309 = 666.

It is not a de Polignac number, because 121222131309 - 2⁹ = 121222130797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222131109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5476354 + ... + 5498444.

It is an arithmetic number, because the mean of its divisors is an integer number (5750437140).

Almost surely, 2^121222131309 is an apocalyptic number.

It is an amenable number.

121222131309 is a deficient number, since it is larger than the sum of its proper divisors (62791857171).

121222131309 is a wasteful number, since it uses less digits than its factorization.

121222131309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27098 (or 27092 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 121222131309 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred thirty-one thousand, three hundred nine".