1022020101121 has 2 divisors, whose sum is σ = 1022020101122. Its totient is φ = 1022020101120.

The previous prime is 1022020101119. The next prime is 1022020101149. The reversal of 1022020101121 is 1211010202201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1003973940225 + 18046160896 = 1001985^2 + 134336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1022020101121 - 2¹ = 1022020101119 is a prime.

Together with 1022020101119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1022020111121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511010050560 + 511010050561.

It is an arithmetic number, because the mean of its divisors is an integer number (511010050561).

Almost surely, 2^{1022020101121} is an apocalyptic number.

It is an amenable number.

1022020101121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1022020101121 is an equidigital number, since it uses as much as digits as its factorization.

1022020101121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1022020101121 its reverse (1211010202201), we get a palindrome (2233030303322).

The spelling of 1022020101121 in words is "one trillion, twenty-two billion, twenty million, one hundred one thousand, one hundred twenty-one".