122121111110122 has 4 divisors (see below), whose sum is σ = 183181666665186. Its totient is φ = 61060555555060.

The previous prime is 122121111110087. The next prime is 122121111110137. The reversal of 122121111110122 is 221011111121221.

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

It can be written as a sum of positive squares in only one way, i.e., 117391569198121 + 4729541912001 = 10834739^2 + 2174751^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 122121111110122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30530277777529 + ... + 30530277777532.

Almost surely, 2^{122121111110122} is an apocalyptic number.

122121111110122 is a deficient number, since it is larger than the sum of its proper divisors (61060555555064).

122121111110122 is an equidigital number, since it uses as much as digits as its factorization.

122121111110122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61060555555063.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 122121111110122 its reverse (221011111121221), we get a palindrome (343132222231343).

The spelling of 122121111110122 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred ten thousand, one hundred twenty-two".