2111002220122 has 4 divisors (see below), whose sum is σ = 3166503330186. Its totient is φ = 1055501110060.

The previous prime is 2111002220081. The next prime is 2111002220143. The reversal of 2111002220122 is 2210222001112.

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., 1972566879361 + 138435340761 = 1404481^2 + 372069^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2111002220096 and 2111002220105.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527750555029 + ... + 527750555032.

Almost surely, 2^{2111002220122} is an apocalyptic number.

2111002220122 is a deficient number, since it is larger than the sum of its proper divisors (1055501110064).

2111002220122 is a wasteful number, since it uses less digits than its factorization.

2111002220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055501110063.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2111002220122 its reverse (2210222001112), we get a palindrome (4321224221234).

The spelling of 2111002220122 in words is "two trillion, one hundred eleven billion, two million, two hundred twenty thousand, one hundred twenty-two".