101121000221000 has 256 divisors, whose sum is σ = 252879832258560. Its totient is φ = 37759174041600.

The previous prime is 101121000220969. The next prime is 101121000221027. The reversal of 101121000221000 is 122000121101.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 381460502 + ... + 381725498.

It is an arithmetic number, because the mean of its divisors is an integer number (987811844760).

Almost surely, 2^{101121000221000} is an apocalyptic number.

101121000221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101121000221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126439916129280).

101121000221000 is an abundant number, since it is smaller than the sum of its proper divisors (151758832037560).

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

101121000221000 is a wasteful number, since it uses less digits than its factorization.

101121000221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265441 (or 265427 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101121000221000 its reverse (122000121101), we get a palindrome (101243000342101).

The spelling of 101121000221000 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twenty-one thousand".