101000001021220 has 96 divisors (see below), whose sum is σ = 256670645978880. Its totient is φ = 32590096035840.

The previous prime is 101000001021191. The next prime is 101000001021253. The reversal of 101000001021220 is 22120100000101.

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 = 101000001021197 and 101000001021206.

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, 51300991 + ... + 53233369.

It is an arithmetic number, because the mean of its divisors is an integer number (2673652562280).

Almost surely, 2^{101000001021220} is an apocalyptic number.

101000001021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101000001021220 is an abundant number, since it is smaller than the sum of its proper divisors (155670644957660).

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

101000001021220 is a wasteful number, since it uses less digits than its factorization.

101000001021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954373 (or 1954371 counting only the distinct ones).

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

Adding to 101000001021220 its reverse (22120100000101), we get a palindrome (123120101021321).

The spelling of 101000001021220 in words is "one hundred one trillion, one million, twenty-one thousand, two hundred twenty".