145412554221122 has 32 divisors (see below), whose sum is σ = 235948650364800. Its totient is φ = 66961690963200.

The previous prime is 145412554221107. The next prime is 145412554221127. The reversal of 145412554221122 is 221122455214541.

It is a super-2 number, since 2×145412554221122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145412554221122.

It is not an unprimeable number, because it can be changed into a prime (145412554221127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211024997 + ... + 211712952.

It is an arithmetic number, because the mean of its divisors is an integer number (7373395323900).

Almost surely, 2^{145412554221122} is an apocalyptic number.

145412554221122 is a deficient number, since it is larger than the sum of its proper divisors (90536096143678).

145412554221122 is a wasteful number, since it uses less digits than its factorization.

145412554221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422738186.

The product of its digits is 256000, while the sum is 41.

The spelling of 145412554221122 in words is "one hundred forty-five trillion, four hundred twelve billion, five hundred fifty-four million, two hundred twenty-one thousand, one hundred twenty-two".