1220100210977 has 2 divisors, whose sum is σ = 1220100210978. Its totient is φ = 1220100210976.

The previous prime is 1220100210913. The next prime is 1220100211019. The reversal of 1220100210977 is 7790120010221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964149211921 + 255950999056 = 981911^2 + 505916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220100210977 - 2⁶ = 1220100210913 is a prime.

It is a super-2 number, since 2×1220100210977² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220100210677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050105488 + 610050105489.

It is an arithmetic number, because the mean of its divisors is an integer number (610050105489).

Almost surely, 2^{1220100210977} is an apocalyptic number.

It is an amenable number.

1220100210977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220100210977 is an equidigital number, since it uses as much as digits as its factorization.

1220100210977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The spelling of 1220100210977 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred ten thousand, nine hundred seventy-seven".