20001102101012 has 6 divisors (see below), whose sum is σ = 35001928676778. Its totient is φ = 10000551050504.

The previous prime is 20001102101011. The next prime is 20001102101033. The reversal of 20001102101012 is 21010120110002.

It can be written as a sum of positive squares in only one way, i.e., 19738347441796 + 262754659216 = 4442786^2 + 512596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20001102100984 and 20001102101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001102101011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2500137762623 + ... + 2500137762630.

It is an arithmetic number, because the mean of its divisors is an integer number (5833654779463).

Almost surely, 2^{20001102101012} is an apocalyptic number.

It is an amenable number.

20001102101012 is a deficient number, since it is larger than the sum of its proper divisors (15000826575766).

20001102101012 is a wasteful number, since it uses less digits than its factorization.

20001102101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000275525257 (or 5000275525255 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001102101012 its reverse (21010120110002), we get a palindrome (41011222211014).

The spelling of 20001102101012 in words is "twenty trillion, one billion, one hundred two million, one hundred one thousand, twelve".