20101211230 has 16 divisors (see below), whose sum is σ = 38310544080. Its totient is φ = 7567514752.

The previous prime is 20101211227. The next prime is 20101211279. The reversal of 20101211230 is 3211210102.

It is a super-2 number, since 2×20101211230² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20101211230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59121040 + ... + 59121379.

It is an arithmetic number, because the mean of its divisors is an integer number (2394409005).

Almost surely, 2^20101211230 is an apocalyptic number.

20101211230 is a deficient number, since it is larger than the sum of its proper divisors (18209332850).

20101211230 is a wasteful number, since it uses less digits than its factorization.

20101211230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118242443.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20101211230 its reverse (3211210102), we get a palindrome (23312421332).

The spelling of 20101211230 in words is "twenty billion, one hundred one million, two hundred eleven thousand, two hundred thirty".