20102211119957 has 2 divisors, whose sum is σ = 20102211119958. Its totient is φ = 20102211119956.

The previous prime is 20102211119951. The next prime is 20102211119993. The reversal of 20102211119957 is 75991111220102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19643989079716 + 458222040241 = 4432154^2 + 676921^2 .

It is a cyclic number.

It is not a de Polignac number, because 20102211119957 - 2¹⁴ = 20102211103573 is a prime.

It is a super-2 number, since 2×20102211119957² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102211119951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051105559978 + 10051105559979.

It is an arithmetic number, because the mean of its divisors is an integer number (10051105559979).

Almost surely, 2^{20102211119957} is an apocalyptic number.

It is an amenable number.

20102211119957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102211119957 is an equidigital number, since it uses as much as digits as its factorization.

20102211119957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 41.

The spelling of 20102211119957 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred nineteen thousand, nine hundred fifty-seven".