20112210000061 has 2 divisors, whose sum is σ = 20112210000062. Its totient is φ = 20112210000060.

The previous prime is 20112209999977. The next prime is 20112210000107. The reversal of 20112210000061 is 16000001221102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14163518268025 + 5948691732036 = 3763445^2 + 2438994^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112210000061 - 2¹³ = 20112209991869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112210000661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056105000030 + 10056105000031.

It is an arithmetic number, because the mean of its divisors is an integer number (10056105000031).

Almost surely, 2^{20112210000061} is an apocalyptic number.

It is an amenable number.

20112210000061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112210000061 is an equidigital number, since it uses as much as digits as its factorization.

20112210000061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20112210000061 its reverse (16000001221102), we get a palindrome (36112211221163).

The spelling of 20112210000061 in words is "twenty trillion, one hundred twelve billion, two hundred ten million, sixty-one", and thus it is an aban number.