20001201210102 has 96 divisors (see below), whose sum is σ = 46620368018784. Its totient is φ = 5703953472000.

The previous prime is 20001201210097. The next prime is 20001201210131. The reversal of 20001201210102 is 20101210210002.

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, 1239146952 + ... + 1239163092.

It is an arithmetic number, because the mean of its divisors is an integer number (485628833529).

Almost surely, 2^{20001201210102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001201210102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23310184009392).

20001201210102 is an abundant number, since it is smaller than the sum of its proper divisors (26619166808682).

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

20001201210102 is a wasteful number, since it uses less digits than its factorization.

20001201210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23774 (or 23767 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001201210102 its reverse (20101210210002), we get a palindrome (40102411420104).

The spelling of 20001201210102 in words is "twenty trillion, one billion, two hundred one million, two hundred ten thousand, one hundred two".