121231312313222 has 16 divisors (see below), whose sum is σ = 189789633556992. Its totient is φ = 57969108770760.

The previous prime is 121231312313219. The next prime is 121231312313269. The reversal of 121231312313222 is 222313213132121.

It is a super-2 number, since 2×121231312313222² (a number of 29 digits) contains 22 as substring.

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, 251667548 + ... + 252148799.

It is an arithmetic number, because the mean of its divisors is an integer number (11861852097312).

Almost surely, 2^{121231312313222} is an apocalyptic number.

121231312313222 is a deficient number, since it is larger than the sum of its proper divisors (68558321243770).

121231312313222 is a wasteful number, since it uses less digits than its factorization.

121231312313222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503821603.

The product of its digits is 5184, while the sum is 29.

Adding to 121231312313222 its reverse (222313213132121), we get a palindrome (343544525445343).

The spelling of 121231312313222 in words is "one hundred twenty-one trillion, two hundred thirty-one billion, three hundred twelve million, three hundred thirteen thousand, two hundred twenty-two".