11111020212122 has 4 divisors (see below), whose sum is σ = 16666530318186. Its totient is φ = 5555510106060.

The previous prime is 11111020212067. The next prime is 11111020212157. The reversal of 11111020212122 is 22121202011111.

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., 6558254906281 + 4552765305841 = 2560909^2 + 2133721^2 .

It is a super-2 number, since 2×11111020212122² (a number of 27 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 11111020212122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777755053029 + ... + 2777755053032.

Almost surely, 2^{11111020212122} is an apocalyptic number.

11111020212122 is a deficient number, since it is larger than the sum of its proper divisors (5555510106064).

11111020212122 is an equidigital number, since it uses as much as digits as its factorization.

11111020212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555510106063.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11111020212122 its reverse (22121202011111), we get a palindrome (33232222223233).

The spelling of 11111020212122 in words is "eleven trillion, one hundred eleven billion, twenty million, two hundred twelve thousand, one hundred twenty-two".