10111020201220 has 48 divisors (see below), whose sum is σ = 21335542200000. Its totient is φ = 4024906542720.

The previous prime is 10111020201187. The next prime is 10111020201239. The reversal of 10111020201220 is 2210202011101.

It is a self number, because there is not a number n which added to its sum of digits gives 10111020201220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54340906 + ... + 54526654.

It is an arithmetic number, because the mean of its divisors is an integer number (444490462500).

Almost surely, 2^{10111020201220} is an apocalyptic number.

10111020201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111020201220 is an abundant number, since it is smaller than the sum of its proper divisors (11224521998780).

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

10111020201220 is a wasteful number, since it uses less digits than its factorization.

10111020201220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198868 (or 198866 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 10111020201220 its reverse (2210202011101), we get a palindrome (12321222212321).

The spelling of 10111020201220 in words is "ten trillion, one hundred eleven billion, twenty million, two hundred one thousand, two hundred twenty".