20012102101 has 8 divisors (see below), whose sum is σ = 20049533504. Its totient is φ = 19974699360.

The previous prime is 20012102093. The next prime is 20012102141. The reversal of 20012102101 is 10120121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012102101 - 2³ = 20012102093 is a prime.

It is a super-2 number, since 2×20012102101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012102141) 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, 1792306 + ... + 1803436.

It is an arithmetic number, because the mean of its divisors is an integer number (2506191688).

Almost surely, 2^20012102101 is an apocalyptic number.

It is an amenable number.

20012102101 is a deficient number, since it is larger than the sum of its proper divisors (37431403).

20012102101 is a wasteful number, since it uses less digits than its factorization.

20012102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14331.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20012102101 its reverse (10120121002), we get a palindrome (30132223103).

The spelling of 20012102101 in words is "twenty billion, twelve million, one hundred two thousand, one hundred one".