151220822 has 4 divisors (see below), whose sum is σ = 226831236. Its totient is φ = 75610410.

The previous prime is 151220803. The next prime is 151220851. The reversal of 151220822 is 228022151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 228022151 = 7 ⋅32574593.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37805204 + ... + 37805207.

It is an arithmetic number, because the mean of its divisors is an integer number (56707809).

Almost surely, 2^151220822 is an apocalyptic number.

151220822 is a deficient number, since it is larger than the sum of its proper divisors (75610414).

151220822 is an equidigital number, since it uses as much as digits as its factorization.

151220822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75610413.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 151220822 is about 12297.1875646426. The cubic root of 151220822 is about 532.7668548664.

Adding to 151220822 its reverse (228022151), we get a palindrome (379242973).

The spelling of 151220822 in words is "one hundred fifty-one million, two hundred twenty thousand, eight hundred twenty-two".