1020021010 has 16 divisors (see below), whose sum is σ = 1839073536. Its totient is φ = 407333808.

The previous prime is 1020020983. The next prime is 1020021127. The reversal of 1020021010 is 101200201.

It is a junction number, because it is equal to n+sod(n) for n = 1020020984 and 1020021002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77952 + ... + 90091.

It is an arithmetic number, because the mean of its divisors is an integer number (114942096).

Almost surely, 2^1020021010 is an apocalyptic number.

1020021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020021010 is a deficient number, since it is larger than the sum of its proper divisors (819052526).

1020021010 is a wasteful number, since it uses less digits than its factorization.

1020021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168657.

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

The square root of 1020021010 is about 31937.7677679577. The cubic root of 1020021010 is about 1006.6296209973.

Adding to 1020021010 its reverse (101200201), we get a palindrome (1121221211).

The spelling of 1020021010 in words is "one billion, twenty million, twenty-one thousand, ten".