1222030021000 has 32 divisors (see below), whose sum is σ = 2859550251480. Its totient is φ = 488812008000.

The previous prime is 1222030020979. The next prime is 1222030021021. The reversal of 1222030021000 is 1200302221.

It is an interprime number because it is at equal distance from previous prime (1222030020979) and next prime (1222030021021).

It can be written as a sum of positive squares in 4 ways, for example, as 411709589316 + 810320431684 = 641646^2 + 900178^2 .

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, 611014011 + ... + 611016010.

Almost surely, 2^{1222030021000} is an apocalyptic number.

1222030021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222030021000 is an abundant number, since it is smaller than the sum of its proper divisors (1637520230480).

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

1222030021000 is a wasteful number, since it uses less digits than its factorization.

1222030021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222030042 (or 1222030028 counting only the distinct ones).

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

Adding to 1222030021000 its reverse (1200302221), we get a palindrome (1223230323221).

The spelling of 1222030021000 in words is "one trillion, two hundred twenty-two billion, thirty million, twenty-one thousand".