1000020121210 has 32 divisors (see below), whose sum is σ = 1990575559872. Its totient is φ = 358662257280.

The previous prime is 1000020121151. The next prime is 1000020121237. The reversal of 1000020121210 is 121210200001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62259724 + ... + 62275783.

It is an arithmetic number, because the mean of its divisors is an integer number (62205486246).

Almost surely, 2^{1000020121210} is an apocalyptic number.

1000020121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000020121210 is a deficient number, since it is larger than the sum of its proper divisors (990555438662).

1000020121210 is a wasteful number, since it uses less digits than its factorization.

1000020121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124535598.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1000020121210 its reverse (121210200001), we get a palindrome (1121230321211).

The spelling of 1000020121210 in words is "one trillion, twenty million, one hundred twenty-one thousand, two hundred ten".