1011100122 has 12 divisors (see below), whose sum is σ = 2190716970. Its totient is φ = 337033368.

The previous prime is 1011100121. The next prime is 1011100127. The reversal of 1011100122 is 2210011101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1007999001 + 3101121 = 31749^2 + 1761^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (1011100121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28086097 + ... + 28086132.

Almost surely, 2^1011100122 is an apocalyptic number.

1011100122 is an abundant number, since it is smaller than the sum of its proper divisors (1179616848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011100122 is a wasteful number, since it uses less digits than its factorization.

1011100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56172237 (or 56172234 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1011100122 is about 31797.8005843171. The cubic root of 1011100122 is about 1003.6864341705.

Adding to 1011100122 its reverse (2210011101), we get a palindrome (3221111223).

The spelling of 1011100122 in words is "one billion, eleven million, one hundred thousand, one hundred twenty-two".