1001011021010 has 256 divisors, whose sum is σ = 2528208764928. Its totient is φ = 275314636800.

The previous prime is 1001011020983. The next prime is 1001011021051. The reversal of 1001011021010 is 101201101001.

It is a happy number.

It is a super-2 number, since 2×1001011021010² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20205470 + ... + 20254950.

It is an arithmetic number, because the mean of its divisors is an integer number (9875815488).

Almost surely, 2^{1001011021010} is an apocalyptic number.

1001011021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001011021010 is an abundant number, since it is smaller than the sum of its proper divisors (1527197743918).

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

1001011021010 is a wasteful number, since it uses less digits than its factorization.

1001011021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49609.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1001011021010 its reverse (101201101001), we get a palindrome (1102212122011).

The spelling of 1001011021010 in words is "one trillion, one billion, eleven million, twenty-one thousand, ten".