1011020002 has 4 divisors (see below), whose sum is σ = 1516530006. Its totient is φ = 505510000.

The previous prime is 1011019987. The next prime is 1011020009. The reversal of 1011020002 is 2000201101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2000201101 = 929 ⋅2153069.

It can be written as a sum of positive squares in only one way, i.e., 968392161 + 42627841 = 31119^2 + 6529^2 .

It is a super-2 number, since 2×1011020002² = 2044322888888160008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011020009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252754999 + ... + 252755002.

Almost surely, 2^1011020002 is an apocalyptic number.

1011020002 is a deficient number, since it is larger than the sum of its proper divisors (505510004).

1011020002 is an equidigital number, since it uses as much as digits as its factorization.

1011020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505510003.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1011020002 is about 31796.5407237957. The cubic root of 1011020002 is about 1003.6599226248.

Adding to 1011020002 its reverse (2000201101), we get a palindrome (3011221103).

The spelling of 1011020002 in words is "one billion, eleven million, twenty thousand, two".