20011201011102 has 128 divisors (see below), whose sum is σ = 48007297105920. Its totient is φ = 5436997695360.

The previous prime is 20011201011049. The next prime is 20011201011107. The reversal of 20011201011102 is 20111010211002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011201011107) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 315289023 + ... + 315352485.

It is an arithmetic number, because the mean of its divisors is an integer number (375057008640).

Almost surely, 2^{20011201011102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011201011102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24003648552960).

20011201011102 is an abundant number, since it is smaller than the sum of its proper divisors (27996096094818).

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

20011201011102 is a wasteful number, since it uses less digits than its factorization.

20011201011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65398.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011201011102 its reverse (20111010211002), we get a palindrome (40122211222104).

The spelling of 20011201011102 in words is "twenty trillion, eleven billion, two hundred one million, eleven thousand, one hundred two".