10211021220220 has 24 divisors (see below), whose sum is σ = 21847732197984. Its totient is φ = 4007344176576.

The previous prime is 10211021220181. The next prime is 10211021220229. The reversal of 10211021220220 is 2202212011201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10211021220194 and 10211021220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211021220229) 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, 4816518384 + ... + 4816520503.

It is an arithmetic number, because the mean of its divisors is an integer number (910322174916).

Almost surely, 2^{10211021220220} is an apocalyptic number.

10211021220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211021220220 is an abundant number, since it is smaller than the sum of its proper divisors (11636710977764).

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

10211021220220 is a wasteful number, since it uses less digits than its factorization.

10211021220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9633038949 (or 9633038947 counting only the distinct ones).

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

Adding to 10211021220220 its reverse (2202212011201), we get a palindrome (12413233231421).

The spelling of 10211021220220 in words is "ten trillion, two hundred eleven billion, twenty-one million, two hundred twenty thousand, two hundred twenty".