12020220101021 has 4 divisors (see below), whose sum is σ = 13112967382944. Its totient is φ = 10927472819100.

The previous prime is 12020220100951. The next prime is 12020220101053. The reversal of 12020220101021 is 12010102202021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12020220101021 - 2¹⁴ = 12020220084637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020220100987 and 12020220101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020220101081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546373640945 + ... + 546373640966.

It is an arithmetic number, because the mean of its divisors is an integer number (3278241845736).

Almost surely, 2^{12020220101021} is an apocalyptic number.

12020220101021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12020220101021 is a deficient number, since it is larger than the sum of its proper divisors (1092747281923).

12020220101021 is a wasteful number, since it uses less digits than its factorization.

12020220101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092747281922.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12020220101021 its reverse (12010102202021), we get a palindrome (24030322303042).

The spelling of 12020220101021 in words is "twelve trillion, twenty billion, two hundred twenty million, one hundred one thousand, twenty-one".