210121222010000 has 200 divisors, whose sum is σ = 584443431035904. Its totient is φ = 71664376320000.

The previous prime is 210121222009967. The next prime is 210121222010069. The reversal of 210121222010000 is 10222121012.

It is a tau number, because it is divible by the number of its divisors (200).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5512064 + ... + 21227936.

Almost surely, 2^{210121222010000} is an apocalyptic number.

210121222010000 is a gapful number since it is divisible by the number (20) 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 210121222010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292221715517952).

210121222010000 is an abundant number, since it is smaller than the sum of its proper divisors (374322209025904).

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

210121222010000 is a wasteful number, since it uses less digits than its factorization.

210121222010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15716099 (or 15716078 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210121222010000 its reverse (10222121012), we get a palindrome (210131444131012).

The spelling of 210121222010000 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty-two million, ten thousand".