10220120111021 has 16 divisors (see below), whose sum is σ = 10306202317824. Its totient is φ = 10134420171264.

The previous prime is 10220120110973. The next prime is 10220120111029. The reversal of 10220120111021 is 12011102102201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10220120111021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220120110987 and 10220120111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220120111029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213889085 + ... + 213936861.

It is an arithmetic number, because the mean of its divisors is an integer number (644137644864).

Almost surely, 2^{10220120111021} is an apocalyptic number.

It is an amenable number.

10220120111021 is a deficient number, since it is larger than the sum of its proper divisors (86082206803).

10220120111021 is a wasteful number, since it uses less digits than its factorization.

10220120111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51740.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10220120111021 its reverse (12011102102201), we get a palindrome (22231222213222).

The spelling of 10220120111021 in words is "ten trillion, two hundred twenty billion, one hundred twenty million, one hundred eleven thousand, twenty-one".