201101000001220 has 24 divisors (see below), whose sum is σ = 460704109094208. Its totient is φ = 73127636364000.

The previous prime is 201101000001211. The next prime is 201101000001229. The reversal of 201101000001220 is 22100000101102.

It is an interprime number because it is at equal distance from previous prime (201101000001211) and next prime (201101000001229).

It is a super-2 number, since 2×201101000001220² (a number of 29 digits) contains 22 as substring.

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 = 201101000001197 and 201101000001206.

It is not an unprimeable number, because it can be changed into a prime (201101000001229) 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, 457047727056 + ... + 457047727495.

It is an arithmetic number, because the mean of its divisors is an integer number (19196004545592).

Almost surely, 2^{201101000001220} is an apocalyptic number.

201101000001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201101000001220 is an abundant number, since it is smaller than the sum of its proper divisors (259603109092988).

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

201101000001220 is a wasteful number, since it uses less digits than its factorization.

201101000001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914095454571 (or 914095454569 counting only the distinct ones).

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

Adding to 201101000001220 its reverse (22100000101102), we get a palindrome (223201000102322).

The spelling of 201101000001220 in words is "two hundred one trillion, one hundred one billion, one thousand, two hundred twenty".