101221001120200 has 192 divisors, whose sum is σ = 255799455912000. Its totient is φ = 37026324771840.

The previous prime is 101221001120137. The next prime is 101221001120201. The reversal of 101221001120200 is 2021100122101.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (101221001120201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2873374987 + ... + 2873410213.

It is an arithmetic number, because the mean of its divisors is an integer number (1332288832875).

Almost surely, 2^{101221001120200} is an apocalyptic number.

101221001120200 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 101221001120200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127899727956000).

101221001120200 is an abundant number, since it is smaller than the sum of its proper divisors (154578454791800).

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

101221001120200 is a wasteful number, since it uses less digits than its factorization.

101221001120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45504 (or 45495 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 101221001120200 its reverse (2021100122101), we get a palindrome (103242101242301).

The spelling of 101221001120200 in words is "one hundred one trillion, two hundred twenty-one billion, one million, one hundred twenty thousand, two hundred".