122111111002 has 4 divisors (see below), whose sum is σ = 183166666506. Its totient is φ = 61055555500.

The previous prime is 122111110981. The next prime is 122111111011. The reversal of 122111111002 is 200111111221.

It is a happy number.

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., 64242478521 + 57868632481 = 253461^2 + 240559^2 .

It is a super-2 number, since 2×122111111002² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30527777749 + ... + 30527777752.

Almost surely, 2^122111111002 is an apocalyptic number.

122111111002 is a deficient number, since it is larger than the sum of its proper divisors (61055555504).

122111111002 is an equidigital number, since it uses as much as digits as its factorization.

122111111002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61055555503.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122111111002 its reverse (200111111221), we get a palindrome (322222222223).

The spelling of 122111111002 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, two".