20012201201000 has 32 divisors (see below), whose sum is σ = 46828550812680. Its totient is φ = 8004880480000.

The previous prime is 20012201200991. The next prime is 20012201201009. The reversal of 20012201201000 is 10210221002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20012201200991) and next prime (20012201201009).

It can be written as a sum of positive squares in 4 ways, for example, as 3895878544804 + 16116322656196 = 1973798^2 + 4014514^2 .

It is not an unprimeable number, because it can be changed into a prime (20012201201009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10006099601 + ... + 10006101600.

Almost surely, 2^{20012201201000} is an apocalyptic number.

20012201201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012201201000 is an abundant number, since it is smaller than the sum of its proper divisors (26816349611680).

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

20012201201000 is a wasteful number, since it uses less digits than its factorization.

20012201201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20012201222 (or 20012201208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20012201201000 its reverse (10210221002), we get a palindrome (20022411422002).

The spelling of 20012201201000 in words is "twenty trillion, twelve billion, two hundred one million, two hundred one thousand".