140023402011221 has 2 divisors, whose sum is σ = 140023402011222. Its totient is φ = 140023402011220.

The previous prime is 140023402011193. The next prime is 140023402011263. The reversal of 140023402011221 is 122110204320041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98202748672900 + 41820653338321 = 9909730^2 + 6466889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140023402011221 is a prime.

It is a super-2 number, since 2×140023402011221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140023402016221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70011701005610 + 70011701005611.

It is an arithmetic number, because the mean of its divisors is an integer number (70011701005611).

Almost surely, 2^{140023402011221} is an apocalyptic number.

It is an amenable number.

140023402011221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140023402011221 is an equidigital number, since it uses as much as digits as its factorization.

140023402011221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 140023402011221 its reverse (122110204320041), we get a palindrome (262133606331262).

The spelling of 140023402011221 in words is "one hundred forty trillion, twenty-three billion, four hundred two million, eleven thousand, two hundred twenty-one".