40014197221 has 2 divisors, whose sum is σ = 40014197222. Its totient is φ = 40014197220.

The previous prime is 40014197183. The next prime is 40014197233. The reversal of 40014197221 is 12279141004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22055517121 + 17958680100 = 148511^2 + 134010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40014197221 is a prime.

It is a super-2 number, since 2×40014197221² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40014197291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20007098610 + 20007098611.

It is an arithmetic number, because the mean of its divisors is an integer number (20007098611).

Almost surely, 2^40014197221 is an apocalyptic number.

It is an amenable number.

40014197221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40014197221 is an equidigital number, since it uses as much as digits as its factorization.

40014197221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The spelling of 40014197221 in words is "forty billion, fourteen million, one hundred ninety-seven thousand, two hundred twenty-one".