101111100100220 has 144 divisors (see below), whose sum is σ = 262680388457760. Its totient is φ = 32503522738176.

The previous prime is 101111100100189. The next prime is 101111100100259. The reversal of 101111100100220 is 22001001111101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26184797 + ... + 29797076.

It is an arithmetic number, because the mean of its divisors is an integer number (1824169364290).

Almost surely, 2^{101111100100220} is an apocalyptic number.

101111100100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111100100220 is an abundant number, since it is smaller than the sum of its proper divisors (161569288357540).

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

101111100100220 is a wasteful number, since it uses less digits than its factorization.

101111100100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55982012 (or 55982003 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 101111100100220 its reverse (22001001111101), we get a palindrome (123112101211321).

The spelling of 101111100100220 in words is "one hundred one trillion, one hundred eleven billion, one hundred million, one hundred thousand, two hundred twenty".