101221000111000 has 192 divisors, whose sum is σ = 297539550584640. Its totient is φ = 31549402368000.

The previous prime is 101221000110983. The next prime is 101221000111031. The reversal of 101221000111000 is 111000122101.

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 58905657 + ... + 60599656.

It is an arithmetic number, because the mean of its divisors is an integer number (1549685159295).

Almost surely, 2^{101221000111000} is an apocalyptic number.

101221000111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101221000111000 is an abundant number, since it is smaller than the sum of its proper divisors (196318550473640).

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

101221000111000 is a wasteful number, since it uses less digits than its factorization.

101221000111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119505363 (or 119505338 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101221000111000 its reverse (111000122101), we get a palindrome (101332000233101).

The spelling of 101221000111000 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred eleven thousand".