20021213101230 has 48 divisors (see below), whose sum is σ = 56787440799024. Its totient is φ = 4853627418240.

The previous prime is 20021213101217. The next prime is 20021213101273. The reversal of 20021213101230 is 3210131212002.

20021213101230 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 121 + 310 + 1 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10111722799 + ... + 10111724778.

It is an arithmetic number, because the mean of its divisors is an integer number (1183071683313).

Almost surely, 2^{20021213101230} is an apocalyptic number.

20021213101230 is an abundant number, since it is smaller than the sum of its proper divisors (36766227697794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021213101230 is a wasteful number, since it uses less digits than its factorization.

20021213101230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20223447601 (or 20223447598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20021213101230 its reverse (3210131212002), we get a palindrome (23231344313232).

The spelling of 20021213101230 in words is "twenty trillion, twenty-one billion, two hundred thirteen million, one hundred one thousand, two hundred thirty".