1021222402 has 32 divisors (see below), whose sum is σ = 1710035712. Its totient is φ = 454907904.

The previous prime is 1021222373. The next prime is 1021222403. The reversal of 1021222402 is 2042221201.

It is not an unprimeable number, because it can be changed into a prime (1021222403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69123 + ... + 82585.

It is an arithmetic number, because the mean of its divisors is an integer number (53438616).

Almost surely, 2^1021222402 is an apocalyptic number.

1021222402 is a deficient number, since it is larger than the sum of its proper divisors (688813310).

1021222402 is a wasteful number, since it uses less digits than its factorization.

1021222402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13602.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1021222402 is about 31956.5705606844. The cubic root of 1021222402 is about 1007.0246724307.

Adding to 1021222402 its reverse (2042221201), we get a palindrome (3063443603).

The spelling of 1021222402 in words is "one billion, twenty-one million, two hundred twenty-two thousand, four hundred two".