101012201220 has 96 divisors (see below), whose sum is σ = 324342643968. Its totient is φ = 23009674752.

The previous prime is 101012201219. The next prime is 101012201221. The reversal of 101012201220 is 22102210101.

It is an interprime number because it is at equal distance from previous prime (101012201219) and next prime (101012201221).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101012201196 and 101012201205.

It is not an unprimeable number, because it can be changed into a prime (101012201221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287359 + ... + 533478.

It is an arithmetic number, because the mean of its divisors is an integer number (3378569208).

Almost surely, 2^101012201220 is an apocalyptic number.

101012201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101012201220 is an abundant number, since it is smaller than the sum of its proper divisors (223330442748).

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

101012201220 is a wasteful number, since it uses less digits than its factorization.

101012201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821149 (or 821147 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101012201220 its reverse (22102210101), we get a palindrome (123114411321).

The spelling of 101012201220 in words is "one hundred one billion, twelve million, two hundred one thousand, two hundred twenty".