1020220110100 has 36 divisors (see below), whose sum is σ = 2214422072604. Its totient is φ = 407987687680.

The previous prime is 1020220110097. The next prime is 1020220110103. The reversal of 1020220110100 is 10110220201.

It is an interprime number because it is at equal distance from previous prime (1020220110097) and next prime (1020220110103).

It can be written as a sum of positive squares in 6 ways, for example, as 375173400196 + 645046709904 = 612514^2 + 803148^2 .

It is a super-2 number, since 2×1020220110100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020220110103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 845119 + ... + 1659718.

It is an arithmetic number, because the mean of its divisors is an integer number (61511724239).

Almost surely, 2^{1020220110100} is an apocalyptic number.

1020220110100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020220110100 is an abundant number, since it is smaller than the sum of its proper divisors (1194201962504).

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

1020220110100 is a wasteful number, since it uses less digits than its factorization.

1020220110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508924 (or 2508917 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1020220110100 its reverse (10110220201), we get a palindrome (1030330330301).

The spelling of 1020220110100 in words is "one trillion, twenty billion, two hundred twenty million, one hundred ten thousand, one hundred".