101111121220020 has 96 divisors (see below), whose sum is σ = 287159492390400. Its totient is φ = 26578514586624.

The previous prime is 101111121220007. The next prime is 101111121220079. The reversal of 101111121220020 is 20022121111101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 14361855 + ... + 20211014.

It is an arithmetic number, because the mean of its divisors is an integer number (2991244712400).

Almost surely, 2^{101111121220020} is an apocalyptic number.

101111121220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101111121220020 is an abundant number, since it is smaller than the sum of its proper divisors (186048371170380).

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

101111121220020 is a wasteful number, since it uses less digits than its factorization.

101111121220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34573577 (or 34573575 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101111121220020 its reverse (20022121111101), we get a palindrome (121133242331121).

The spelling of 101111121220020 in words is "one hundred one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, twenty".