20120203101 has 32 divisors (see below), whose sum is σ = 28371466368. Its totient is φ = 12666101760.

The previous prime is 20120203091. The next prime is 20120203109. The reversal of 20120203101 is 10130202102.

It is not a de Polignac number, because 20120203101 - 2¹⁸ = 20119940957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120203109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 866890 + ... + 889796.

It is an arithmetic number, because the mean of its divisors is an integer number (886608324).

Almost surely, 2^20120203101 is an apocalyptic number.

It is an amenable number.

20120203101 is a deficient number, since it is larger than the sum of its proper divisors (8251263267).

20120203101 is a wasteful number, since it uses less digits than its factorization.

20120203101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23181.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 20120203101 its reverse (10130202102), we get a palindrome (30250405203).

Subtracting from 20120203101 its reverse (10130202102), we obtain a palindrome (9990000999).

The spelling of 20120203101 in words is "twenty billion, one hundred twenty million, two hundred three thousand, one hundred one".