20111202101000 has 64 divisors (see below), whose sum is σ = 47061334223280. Its totient is φ = 8044289164800.

The previous prime is 20111202100999. The next prime is 20111202101059. The reversal of 20111202101000 is 10120211102.

It can be written as a sum of positive squares in 8 ways, for example, as 1170027295684 + 18941174805316 = 1081678^2 + 4352146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46260644 + ... + 46693356.

Almost surely, 2^{20111202101000} is an apocalyptic number.

20111202101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111202101000 is an abundant number, since it is smaller than the sum of its proper divisors (26950132122280).

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

20111202101000 is a wasteful number, since it uses less digits than its factorization.

20111202101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479211 (or 479197 counting only the distinct ones).

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

Adding to 20111202101000 its reverse (10120211102), we get a palindrome (20121322312102).

The spelling of 20111202101000 in words is "twenty trillion, one hundred eleven billion, two hundred two million, one hundred one thousand".