1225021030 has 16 divisors (see below), whose sum is σ = 2235245184. Its totient is φ = 483295680.

The previous prime is 1225021013. The next prime is 1225021043. The reversal of 1225021030 is 301205221.

It is a junction number, because it is equal to n+sod(n) for n = 1225020995 and 1225021013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838326 + ... + 839785.

It is an arithmetic number, because the mean of its divisors is an integer number (139702824).

Almost surely, 2^1225021030 is an apocalyptic number.

1225021030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225021030 is a deficient number, since it is larger than the sum of its proper divisors (1010224154).

1225021030 is a wasteful number, since it uses less digits than its factorization.

1225021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678191.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1225021030 is about 35000.3004272820. The cubic root of 1225021030 is about 1069.9936034788.

Adding to 1225021030 its reverse (301205221), we get a palindrome (1526226251).

The spelling of 1225021030 in words is "one billion, two hundred twenty-five million, twenty-one thousand, thirty".