2220121002101 has 2 divisors, whose sum is σ = 2220121002102. Its totient is φ = 2220121002100.

The previous prime is 2220121002061. The next prime is 2220121002107. The reversal of 2220121002101 is 1012001210222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1977440626225 + 242680375876 = 1406215^2 + 492626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220121002101 is a prime.

It is a super-3 number, since 3×2220121002101³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220121002107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110060501050 + 1110060501051.

It is an arithmetic number, because the mean of its divisors is an integer number (1110060501051).

Almost surely, 2^{2220121002101} is an apocalyptic number.

It is an amenable number.

2220121002101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220121002101 is an equidigital number, since it uses as much as digits as its factorization.

2220121002101 is an evil number, because the sum of its binary digits is even.

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

Adding to 2220121002101 its reverse (1012001210222), we get a palindrome (3232122212323).

The spelling of 2220121002101 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, two thousand, one hundred one".