101212202201220 has 144 divisors (see below), whose sum is σ = 334929268058112. Its totient is φ = 24535640171520.

The previous prime is 101212202201167. The next prime is 101212202201249. The reversal of 101212202201220 is 22102202212101.

It is a happy number.

101212202201220 is a `hidden beast` number, since 1 + 0 + 1 + 2 + 1 + 220 + 220 + 1 + 220 = 666.

It is a super-2 number, since 2×101212202201220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 101212202201193 and 101212202201202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76131324 + ... + 77449356.

It is an arithmetic number, because the mean of its divisors is an integer number (2325897694848).

Almost surely, 2^{101212202201220} is an apocalyptic number.

101212202201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212202201220 is an abundant number, since it is smaller than the sum of its proper divisors (233717065856892).

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

101212202201220 is a wasteful number, since it uses less digits than its factorization.

101212202201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356842 (or 1356837 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 101212202201220 its reverse (22102202212101), we get a palindrome (123314404413321).

The spelling of 101212202201220 in words is "one hundred one trillion, two hundred twelve billion, two hundred two million, two hundred one thousand, two hundred twenty".