20261211423101 has 32 divisors (see below), whose sum is σ = 23134627676160. Its totient is φ = 17564648411200.

The previous prime is 20261211423053. The next prime is 20261211423197. The reversal of 20261211423101 is 10132411216202.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20261211423101 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261211423701) 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, 207709526 + ... + 207807048.

It is an arithmetic number, because the mean of its divisors is an integer number (722957114880).

Almost surely, 2^{20261211423101} is an apocalyptic number.

It is an amenable number.

20261211423101 is a deficient number, since it is larger than the sum of its proper divisors (2873416253059).

20261211423101 is a wasteful number, since it uses less digits than its factorization.

20261211423101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100057.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 20261211423101 its reverse (10132411216202), we get a palindrome (30393622639303).

The spelling of 20261211423101 in words is "twenty trillion, two hundred sixty-one billion, two hundred eleven million, four hundred twenty-three thousand, one hundred one".