1225421532210 has 16 divisors (see below), whose sum is σ = 2941011677376. Its totient is φ = 326779075248.

The previous prime is 1225421532199. The next prime is 1225421532233. The reversal of 1225421532210 is 122351245221.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 40847384407 = 1225421532210 / (1 + 2 + 2 + 5 + 4 + 2 + 1 + 5 + 3 + 2 + 2 + 1 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20423692174 + ... + 20423692233.

It is an arithmetic number, because the mean of its divisors is an integer number (183813229836).

Almost surely, 2^{1225421532210} is an apocalyptic number.

1225421532210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225421532210 is an abundant number, since it is smaller than the sum of its proper divisors (1715590145166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1225421532210 is a wasteful number, since it uses less digits than its factorization.

1225421532210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40847384417.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 1225421532210 its reverse (122351245221), we get a palindrome (1347772777431).

The spelling of 1225421532210 in words is "one trillion, two hundred twenty-five billion, four hundred twenty-one million, five hundred thirty-two thousand, two hundred ten".