10211222111020 has 144 divisors (see below), whose sum is σ = 26286822571968. Its totient is φ = 3315616550400.

The previous prime is 10211222110987. The next prime is 10211222111029. The reversal of 10211222111020 is 2011122211201.

It is a junction number, because it is equal to n+sod(n) for n = 10211222110985 and 10211222111003.

It is not an unprimeable number, because it can be changed into a prime (10211222111029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33834 + ... + 4519246.

It is an arithmetic number, because the mean of its divisors is an integer number (182547378972).

Almost surely, 2^{10211222111020} is an apocalyptic number.

10211222111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10211222111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13143411285984).

10211222111020 is an abundant number, since it is smaller than the sum of its proper divisors (16075600460948).

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

10211222111020 is a wasteful number, since it uses less digits than its factorization.

10211222111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485560 (or 4485551 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10211222111020 its reverse (2011122211201), we get a palindrome (12222344322221).

The spelling of 10211222111020 in words is "ten trillion, two hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, twenty".