20101021021010 has 128 divisors (see below), whose sum is σ = 38720694988800. Its totient is φ = 7491437280000.

The previous prime is 20101021020947. The next prime is 20101021021019. The reversal of 20101021021010 is 1012012010102.

It is a super-2 number, since 2×20101021021010² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20101021020982 and 20101021021000.

It is not an unprimeable number, because it can be changed into a prime (20101021021019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7414613555 + ... + 7414616265.

It is an arithmetic number, because the mean of its divisors is an integer number (302505429600).

Almost surely, 2^{20101021021010} is an apocalyptic number.

20101021021010 is a deficient number, since it is larger than the sum of its proper divisors (18619673967790).

20101021021010 is a wasteful number, since it uses less digits than its factorization.

20101021021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20101021021010 its reverse (1012012010102), we get a palindrome (21113033031112).

The spelling of 20101021021010 in words is "twenty trillion, one hundred one billion, twenty-one million, twenty-one thousand, ten".