101111212101220 has 96 divisors (see below), whose sum is σ = 217653970867200. Its totient is φ = 39432364876800.

The previous prime is 101111212101139. The next prime is 101111212101233. The reversal of 101111212101220 is 22101212111101.

It is a junction number, because it is equal to n+sod(n) for n = 101111212101194 and 101111212101203.

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, 11596648021 + ... + 11596656739.

It is an arithmetic number, because the mean of its divisors is an integer number (2267228863200).

Almost surely, 2^{101111212101220} is an apocalyptic number.

101111212101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111212101220 is an abundant number, since it is smaller than the sum of its proper divisors (116542758765980).

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

101111212101220 is a wasteful number, since it uses less digits than its factorization.

101111212101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16349 (or 16347 counting only the distinct ones).

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

Adding to 101111212101220 its reverse (22101212111101), we get a palindrome (123212424212321).

The spelling of 101111212101220 in words is "one hundred one trillion, one hundred eleven billion, two hundred twelve million, one hundred one thousand, two hundred twenty".