200101211220 has 96 divisors (see below), whose sum is σ = 574311120768. Its totient is φ = 52028669952.

The previous prime is 200101211173. The next prime is 200101211257. The reversal of 200101211220 is 22112101002.

It is a super-2 number, since 2×200101211220² (a number of 23 digits) contains 22 as substring.

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 = 200101211196 and 200101211205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1421452 + ... + 1555868.

It is an arithmetic number, because the mean of its divisors is an integer number (5982407508).

Almost surely, 2^200101211220 is an apocalyptic number.

200101211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200101211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287155560384).

200101211220 is an abundant number, since it is smaller than the sum of its proper divisors (374209909548).

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

200101211220 is a wasteful number, since it uses less digits than its factorization.

200101211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135049 (or 135047 counting only the distinct ones).

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

Adding to 200101211220 its reverse (22112101002), we get a palindrome (222213312222).

The spelling of 200101211220 in words is "two hundred billion, one hundred one million, two hundred eleven thousand, two hundred twenty".