10020000020001 has 16 divisors (see below), whose sum is σ = 13926191146560. Its totient is φ = 6400421168960.

The previous prime is 10020000019993. The next prime is 10020000020029. The reversal of 10020000020001 is 10002000002001.

It is a happy number.

It is not a de Polignac number, because 10020000020001 - 2³ = 10020000019993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10020000025001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 439577970 + ... + 439600763.

It is an arithmetic number, because the mean of its divisors is an integer number (870386946660).

Almost surely, 2^{10020000020001} is an apocalyptic number.

It is an amenable number.

10020000020001 is a deficient number, since it is larger than the sum of its proper divisors (3906191126559).

10020000020001 is a wasteful number, since it uses less digits than its factorization.

10020000020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879178896.

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 10020000020001 its reverse (10002000002001), we get a palindrome (20022000022002).

It can be divided in two parts, 1002000002000 and 1, that added together give a palindrome (1002000002001).

The spelling of 10020000020001 in words is "ten trillion, twenty billion, twenty thousand, one".