101211021011220 has 24 divisors (see below), whose sum is σ = 283390858831584. Its totient is φ = 26989605602976.

The previous prime is 101211021011201. The next prime is 101211021011227. The reversal of 101211021011220 is 22110120112101.

It is a happy number.

It is a super-2 number, since 2×101211021011220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 101211021011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211021011227) 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, 843425175034 + ... + 843425175153.

It is an arithmetic number, because the mean of its divisors is an integer number (11807952451316).

Almost surely, 2^{101211021011220} is an apocalyptic number.

101211021011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101211021011220 is an abundant number, since it is smaller than the sum of its proper divisors (182179837820364).

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

101211021011220 is a wasteful number, since it uses less digits than its factorization.

101211021011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686850350199 (or 1686850350197 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101211021011220 its reverse (22110120112101), we get a palindrome (123321141123321).

The spelling of 101211021011220 in words is "one hundred one trillion, two hundred eleven billion, twenty-one million, eleven thousand, two hundred twenty".