2120224042061 has 2 divisors, whose sum is σ = 2120224042062. Its totient is φ = 2120224042060.

The previous prime is 2120224042009. The next prime is 2120224042103. The reversal of 2120224042061 is 1602404220212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1577046198025 + 543177844036 = 1255805^2 + 737006^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120224042061 - 2¹⁸ = 2120223779917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2120224042061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120224042561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060112021030 + 1060112021031.

It is an arithmetic number, because the mean of its divisors is an integer number (1060112021031).

Almost surely, 2^{2120224042061} is an apocalyptic number.

It is an amenable number.

2120224042061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120224042061 is an equidigital number, since it uses as much as digits as its factorization.

2120224042061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 2120224042061 its reverse (1602404220212), we get a palindrome (3722628262273).

The spelling of 2120224042061 in words is "two trillion, one hundred twenty billion, two hundred twenty-four million, forty-two thousand, sixty-one".