1220222119957 has 2 divisors, whose sum is σ = 1220222119958. Its totient is φ = 1220222119956.

The previous prime is 1220222119819. The next prime is 1220222119967. The reversal of 1220222119957 is 7599112220221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 721660444036 + 498561675921 = 849506^2 + 706089^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220222119957 - 2¹⁹ = 1220221595669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220222119967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610111059978 + 610111059979.

It is an arithmetic number, because the mean of its divisors is an integer number (610111059979).

Almost surely, 2^{1220222119957} is an apocalyptic number.

It is an amenable number.

1220222119957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220222119957 is an equidigital number, since it uses as much as digits as its factorization.

1220222119957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The spelling of 1220222119957 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred nineteen thousand, nine hundred fifty-seven".