1021202045 has 8 divisors (see below), whose sum is σ = 1233667800. Its totient is φ = 811478080.

The previous prime is 1021201999. The next prime is 1021202069. The reversal of 1021202045 is 5402021201.

It can be written as a sum of positive squares in 4 ways, for example, as 52374169 + 968827876 = 7237^2 + 31126^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021202045 - 2⁸ = 1021201789 is a prime.

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, 684626 + ... + 686115.

It is an arithmetic number, because the mean of its divisors is an integer number (154208475).

Almost surely, 2^1021202045 is an apocalyptic number.

It is an amenable number.

1021202045 is a deficient number, since it is larger than the sum of its proper divisors (212465755).

1021202045 is a wasteful number, since it uses less digits than its factorization.

1021202045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1370895.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1021202045 is about 31956.2520486993. The cubic root of 1021202045 is about 1007.0179810585.

Adding to 1021202045 its reverse (5402021201), we get a palindrome (6423223246).

The spelling of 1021202045 in words is "one billion, twenty-one million, two hundred two thousand, forty-five".