101001201220 has 48 divisors (see below), whose sum is σ = 215979861888. Its totient is φ = 39668625920.

The previous prime is 101001201211. The next prime is 101001201229. The reversal of 101001201220 is 22102100101.

101001201220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (101001201211) and next prime (101001201229).

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

It is a junction number, because it is equal to n+sod(n) for n = 101001201197 and 101001201206.

It is not an unprimeable number, because it can be changed into a prime (101001201229) 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, 32985 + ... + 450655.

It is an arithmetic number, because the mean of its divisors is an integer number (4499580456).

Almost surely, 2^101001201220 is an apocalyptic number.

101001201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101001201220 is an abundant number, since it is smaller than the sum of its proper divisors (114978660668).

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

101001201220 is a wasteful number, since it uses less digits than its factorization.

101001201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417900 (or 417898 counting only the distinct ones).

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

Adding to 101001201220 its reverse (22102100101), we get a palindrome (123103301321).

The spelling of 101001201220 in words is "one hundred one billion, one million, two hundred one thousand, two hundred twenty".