10111220202020 has 48 divisors (see below), whose sum is σ = 24334524506880. Its totient is φ = 3457047494784.

The previous prime is 10111220201989. The next prime is 10111220202029. The reversal of 10111220202020 is 2020202211101.

It is a super-2 number, since 2×10111220202020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 10111220201986 and 10111220202004.

It is not an unprimeable number, because it can be changed into a prime (10111220202029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100538879 + ... + 100639398.

It is an arithmetic number, because the mean of its divisors is an integer number (506969260560).

Almost surely, 2^{10111220202020} is an apocalyptic number.

10111220202020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111220202020 is an abundant number, since it is smaller than the sum of its proper divisors (14223304304860).

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

10111220202020 is a wasteful number, since it uses less digits than its factorization.

10111220202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201178652 (or 201178650 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10111220202020 its reverse (2020202211101), we get a palindrome (12131422413121).

The spelling of 10111220202020 in words is "ten trillion, one hundred eleven billion, two hundred twenty million, two hundred two thousand, twenty".