121201112102122 has 16 divisors (see below), whose sum is σ = 197033459073192. Its totient is φ = 55582675611840.

The previous prime is 121201112102069. The next prime is 121201112102131. The reversal of 121201112102122 is 221201211102121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50963621932161 + 70237490169961 = 7138881^2 + 8380781^2 .

It is a super-2 number, since 2×121201112102122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121201112102122.

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, 14845796029 + ... + 14845804192.

Almost surely, 2^{121201112102122} is an apocalyptic number.

121201112102122 is a deficient number, since it is larger than the sum of its proper divisors (75832346971070).

121201112102122 is a wasteful number, since it uses less digits than its factorization.

121201112102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29691600393.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121201112102122 its reverse (221201211102121), we get a palindrome (342402323204243).

The spelling of 121201112102122 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twelve million, one hundred two thousand, one hundred twenty-two".