1021110222061 has 2 divisors, whose sum is σ = 1021110222062. Its totient is φ = 1021110222060.

The previous prime is 1021110222049. The next prime is 1021110222079. The reversal of 1021110222061 is 1602220111201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 608953926025 + 412156296036 = 780355^2 + 641994^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021110222061 - 2⁷ = 1021110221933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021110222091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510555111030 + 510555111031.

It is an arithmetic number, because the mean of its divisors is an integer number (510555111031).

Almost surely, 2^{1021110222061} is an apocalyptic number.

It is an amenable number.

1021110222061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021110222061 is an equidigital number, since it uses as much as digits as its factorization.

1021110222061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1021110222061 its reverse (1602220111201), we get a palindrome (2623330333262).

The spelling of 1021110222061 in words is "one trillion, twenty-one billion, one hundred ten million, two hundred twenty-two thousand, sixty-one".