10100020201220 has 12 divisors (see below), whose sum is σ = 21210042422604. Its totient is φ = 4040008080480.

The previous prime is 10100020201213. The next prime is 10100020201283. The reversal of 10100020201220 is 2210202000101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4904975819524 + 5195044381696 = 2214718^2 + 2279264^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252500505011 + ... + 252500505050.

It is an arithmetic number, because the mean of its divisors is an integer number (1767503535217).

Almost surely, 2^{10100020201220} is an apocalyptic number.

10100020201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10100020201220 is an abundant number, since it is smaller than the sum of its proper divisors (11110022221384).

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

10100020201220 is a wasteful number, since it uses less digits than its factorization.

10100020201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505001010070 (or 505001010068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10100020201220 its reverse (2210202000101), we get a palindrome (12310222201321).

The spelling of 10100020201220 in words is "ten trillion, one hundred billion, twenty million, two hundred one thousand, two hundred twenty".