101211101010220 has 24 divisors (see below), whose sum is σ = 212545783929024. Its totient is φ = 40483969583616.

The previous prime is 101211101010179. The next prime is 101211101010223. The reversal of 101211101010220 is 22010101112101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101211101010220.

It is not an unprimeable number, because it can be changed into a prime (101211101010223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27660964 + ... + 31105483.

It is an arithmetic number, because the mean of its divisors is an integer number (8856074330376).

Almost surely, 2^{101211101010220} is an apocalyptic number.

101211101010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211101010220 is an abundant number, since it is smaller than the sum of its proper divisors (111334682918804).

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

101211101010220 is a wasteful number, since it uses less digits than its factorization.

101211101010220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58852569 (or 58852567 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101211101010220 its reverse (22010101112101), we get a palindrome (123221202122321).

The spelling of 101211101010220 in words is "one hundred one trillion, two hundred eleven billion, one hundred one million, ten thousand, two hundred twenty".