20121102202277 has 2 divisors, whose sum is σ = 20121102202278. Its totient is φ = 20121102202276.

The previous prime is 20121102202207. The next prime is 20121102202283. The reversal of 20121102202277 is 77220220112102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18575143192321 + 1545959009956 = 4309889^2 + 1243366^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121102202277 - 2¹⁰ = 20121102201253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121102202207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060551101138 + 10060551101139.

It is an arithmetic number, because the mean of its divisors is an integer number (10060551101139).

Almost surely, 2^{20121102202277} is an apocalyptic number.

It is an amenable number.

20121102202277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121102202277 is an equidigital number, since it uses as much as digits as its factorization.

20121102202277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 20121102202277 its reverse (77220220112102), we get a palindrome (97341322314379).

The spelling of 20121102202277 in words is "twenty trillion, one hundred twenty-one billion, one hundred two million, two hundred two thousand, two hundred seventy-seven".