1221202030 has 16 divisors (see below), whose sum is σ = 2198573280. Its totient is φ = 488389792.

The previous prime is 1221202027. The next prime is 1221202039. The reversal of 1221202030 is 302021221.

It is a super-2 number, since 2×1221202030² = 2982668796152241800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1221202030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221202039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79647 + ... + 93733.

It is an arithmetic number, because the mean of its divisors is an integer number (137410830).

Almost surely, 2^1221202030 is an apocalyptic number.

1221202030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221202030 is a deficient number, since it is larger than the sum of its proper divisors (977371250).

1221202030 is a wasteful number, since it uses less digits than its factorization.

1221202030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22763.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1221202030 is about 34945.7011662379. The cubic root of 1221202030 is about 1068.8805452291.

Adding to 1221202030 its reverse (302021221), we get a palindrome (1523223251).

The spelling of 1221202030 in words is "one billion, two hundred twenty-one million, two hundred two thousand, thirty".