145221214300001 has 4 divisors (see below), whose sum is σ = 165967102057152. Its totient is φ = 124475326542852.

The previous prime is 145221214299991. The next prime is 145221214300007. The reversal of 145221214300001 is 100003412122541.

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 a de Polignac number, because none of the positive numbers 2^k-145221214300001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145221214300007) 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, 10372943878565 + ... + 10372943878578.

It is an arithmetic number, because the mean of its divisors is an integer number (41491775514288).

Almost surely, 2^{145221214300001} is an apocalyptic number.

It is an amenable number.

145221214300001 is a deficient number, since it is larger than the sum of its proper divisors (20745887757151).

145221214300001 is an equidigital number, since it uses as much as digits as its factorization.

145221214300001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20745887757150.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 145221214300001 its reverse (100003412122541), we get a palindrome (245224626422542).

The spelling of 145221214300001 in words is "one hundred forty-five trillion, two hundred twenty-one billion, two hundred fourteen million, three hundred thousand, one".