20200120000002 has 24 divisors (see below), whose sum is σ = 43796479004460. Its totient is φ = 6728826819840.

The previous prime is 20200119999907. The next prime is 20200120000007. The reversal of 20200120000002 is 20000002100202.

It can be written as a sum of positive squares in 2 ways, for example, as 18567472382001 + 1632647618001 = 4308999^2 + 1277751^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20200120000007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 378848727 + ... + 378902042.

Almost surely, 2^{20200120000002} is an apocalyptic number.

20200120000002 is an abundant number, since it is smaller than the sum of its proper divisors (23596359004458).

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

20200120000002 is a wasteful number, since it uses less digits than its factorization.

20200120000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757752258 (or 757752255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20200120000002 its reverse (20000002100202), we get a palindrome (40200122100204).

The spelling of 20200120000002 in words is "twenty trillion, two hundred billion, one hundred twenty million, two", and thus it is an aban number.