1110021402 has 128 divisors (see below), whose sum is σ = 2713190400. Its totient is φ = 302279040.

The previous prime is 1110021391. The next prime is 1110021431. The reversal of 1110021402 is 2041200111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8102278 + ... + 8102414.

It is an arithmetic number, because the mean of its divisors is an integer number (21196800).

Almost surely, 2^1110021402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1110021402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1356595200).

1110021402 is an abundant number, since it is smaller than the sum of its proper divisors (1603168998).

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

1110021402 is a wasteful number, since it uses less digits than its factorization.

1110021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1110021402 is about 33316.9836870026. The cubic root of 1110021402 is about 1035.4054599417.

Adding to 1110021402 its reverse (2041200111), we get a palindrome (3151221513).

The spelling of 1110021402 in words is "one billion, one hundred ten million, twenty-one thousand, four hundred two".