10020012212221 has 8 divisors (see below), whose sum is σ = 10944811777824. Its totient is φ = 9097527540720.

The previous prime is 10020012212213. The next prime is 10020012212251. The reversal of 10020012212221 is 12221221002001.

It is a happy number.

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 10020012212221 - 2³ = 10020012212213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020012212195 and 10020012212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020012212251) 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, 578714470 + ... + 578731783.

It is an arithmetic number, because the mean of its divisors is an integer number (1368101472228).

Almost surely, 2^{10020012212221} is an apocalyptic number.

10020012212221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10020012212221 is a deficient number, since it is larger than the sum of its proper divisors (924799565603).

10020012212221 is a wasteful number, since it uses less digits than its factorization.

10020012212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157447051.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10020012212221 its reverse (12221221002001), we get a palindrome (22241233214222).

The spelling of 10020012212221 in words is "ten trillion, twenty billion, twelve million, two hundred twelve thousand, two hundred twenty-one".