20010212001 has 16 divisors (see below), whose sum is σ = 31925125120. Its totient is φ = 12313976400.

The previous prime is 20010211987. The next prime is 20010212023. The reversal of 20010212001 is 10021201002.

It is not a de Polignac number, because 20010212001 - 2⁶ = 20010211937 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20010212051) 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, 28504225 + ... + 28504926.

It is an arithmetic number, because the mean of its divisors is an integer number (1995320320).

Almost surely, 2^20010212001 is an apocalyptic number.

It is an amenable number.

20010212001 is a deficient number, since it is larger than the sum of its proper divisors (11914913119).

20010212001 is a wasteful number, since it uses less digits than its factorization.

20010212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57009173 (or 57009167 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20010212001 its reverse (10021201002), we get a palindrome (30031413003).

The spelling of 20010212001 in words is "twenty billion, ten million, two hundred twelve thousand, one".