121310221312222 has 4 divisors (see below), whose sum is σ = 181965331968336. Its totient is φ = 60655110656110.

The previous prime is 121310221312213. The next prime is 121310221312283. The reversal of 121310221312222 is 222213122013121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30327555328054 + ... + 30327555328057.

It is an arithmetic number, because the mean of its divisors is an integer number (45491332992084).

Almost surely, 2^{121310221312222} is an apocalyptic number.

121310221312222 is a deficient number, since it is larger than the sum of its proper divisors (60655110656114).

121310221312222 is an equidigital number, since it uses as much as digits as its factorization.

121310221312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60655110656113.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 121310221312222 its reverse (222213122013121), we get a palindrome (343523343325343).

The spelling of 121310221312222 in words is "one hundred twenty-one trillion, three hundred ten billion, two hundred twenty-one million, three hundred twelve thousand, two hundred twenty-two".