1011220210100 has 18 divisors (see below), whose sum is σ = 2194347856134. Its totient is φ = 404488084000.

The previous prime is 1011220210097. The next prime is 1011220210103. The reversal of 1011220210100 is 10120221101.

It is an interprime number because it is at equal distance from previous prime (1011220210097) and next prime (1011220210103).

It can be written as a sum of positive squares in 3 ways, for example, as 127973614756 + 883246595344 = 357734^2 + 939812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220210103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5056100951 + ... + 5056101150.

Almost surely, 2^{1011220210100} is an apocalyptic number.

1011220210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011220210100 is an abundant number, since it is smaller than the sum of its proper divisors (1183127646034).

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

1011220210100 is a wasteful number, since it uses less digits than its factorization.

1011220210100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10112202115 (or 10112202108 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1011220210100 its reverse (10120221101), we get a palindrome (1021340431201).

The spelling of 1011220210100 in words is "one trillion, eleven billion, two hundred twenty million, two hundred ten thousand, one hundred".