10211212220020 has 24 divisors (see below), whose sum is σ = 24506909328384. Its totient is φ = 3500987046816.

The previous prime is 10211212220017. The next prime is 10211212220039. The reversal of 10211212220020 is 2002221211201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10211212219976 and 10211212220003.

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, 36468614932 + ... + 36468615211.

It is an arithmetic number, because the mean of its divisors is an integer number (1021121222016).

Almost surely, 2^{10211212220020} is an apocalyptic number.

10211212220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10211212220020 is an abundant number, since it is smaller than the sum of its proper divisors (14295697108364).

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

10211212220020 is a wasteful number, since it uses less digits than its factorization.

10211212220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72937230159 (or 72937230157 counting only the distinct ones).

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

Adding to 10211212220020 its reverse (2002221211201), we get a palindrome (12213433431221).

The spelling of 10211212220020 in words is "ten trillion, two hundred eleven billion, two hundred twelve million, two hundred twenty thousand, twenty".