29967466140221 has 4 divisors (see below), whose sum is σ = 30475389295200. Its totient is φ = 29459542985244.

The previous prime is 29967466140217. The next prime is 29967466140229. The reversal of 29967466140221 is 12204166476992.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29967466140221 - 2² = 29967466140217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59), and also a Moran number because the ratio is a prime number: 507923154919 = 29967466140221 / (2 + 9 + 9 + 6 + 7 + 4 + 6 + 6 + 1 + 4 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29967466140229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253961577401 + ... + 253961577518.

It is an arithmetic number, because the mean of its divisors is an integer number (7618847323800).

Almost surely, 2^{29967466140221} is an apocalyptic number.

It is an amenable number.

29967466140221 is a deficient number, since it is larger than the sum of its proper divisors (507923154979).

29967466140221 is an equidigital number, since it uses as much as digits as its factorization.

29967466140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507923154978.

The product of its (nonzero) digits is 15676416, while the sum is 59.

The spelling of 29967466140221 in words is "twenty-nine trillion, nine hundred sixty-seven billion, four hundred sixty-six million, one hundred forty thousand, two hundred twenty-one".