10020111021221 has 8 divisors (see below), whose sum is σ = 11451651504384. Its totient is φ = 8588594550960.

The previous prime is 10020111021209. The next prime is 10020111021223. The reversal of 10020111021221 is 12212011102001.

10020111021221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10020111021221 - 2⁶ = 10020111021157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10020111021196 and 10020111021205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020111021223) 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, 5099990 + ... + 6786023.

It is an arithmetic number, because the mean of its divisors is an integer number (1431456438048).

Almost surely, 2^{10020111021221} is an apocalyptic number.

It is an amenable number.

10020111021221 is a deficient number, since it is larger than the sum of its proper divisors (1431540483163).

10020111021221 is a wasteful number, since it uses less digits than its factorization.

10020111021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12006451.

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

Adding to 10020111021221 its reverse (12212011102001), we get a palindrome (22232122123222).

The spelling of 10020111021221 in words is "ten trillion, twenty billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".