200121111102102 has 64 divisors (see below), whose sum is σ = 418368709644480. Its totient is φ = 63734191202304.

The previous prime is 200121111102079. The next prime is 200121111102109. The reversal of 200121111102102 is 201201111121002.

It is a happy number.

It is a super-2 number, since 2×200121111102102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200121111102109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124656588 + ... + 126251760.

It is an arithmetic number, because the mean of its divisors is an integer number (6537011088195).

Almost surely, 2^{200121111102102} is an apocalyptic number.

200121111102102 is an abundant number, since it is smaller than the sum of its proper divisors (218247598542378).

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

200121111102102 is a wasteful number, since it uses less digits than its factorization.

200121111102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602737.

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

Adding to 200121111102102 its reverse (201201111121002), we get a palindrome (401322222223104).

The spelling of 200121111102102 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, one hundred two thousand, one hundred two".