20010212210220 has 48 divisors (see below), whose sum is σ = 56338144463328. Its totient is φ = 5306575610880.

The previous prime is 20010212210203. The next prime is 20010212210237. The reversal of 20010212210220 is 2201221201002.

It is an interprime number because it is at equal distance from previous prime (20010212210203) and next prime (20010212210237).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20010212210220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921269629 + ... + 921291348.

It is an arithmetic number, because the mean of its divisors is an integer number (1173711342986).

Almost surely, 2^{20010212210220} is an apocalyptic number.

20010212210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010212210220 is an abundant number, since it is smaller than the sum of its proper divisors (36327932253108).

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

20010212210220 is a wasteful number, since it uses less digits than its factorization.

20010212210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842561170 (or 1842561168 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20010212210220 its reverse (2201221201002), we get a palindrome (22211433411222).

The spelling of 20010212210220 in words is "twenty trillion, ten billion, two hundred twelve million, two hundred ten thousand, two hundred twenty".