10000021000061 has 16 divisors (see below), whose sum is σ = 10263542220288. Its totient is φ = 9737441049600.

The previous prime is 10000021000031. The next prime is 10000021000141. The reversal of 10000021000061 is 16000012000001.

It is a cyclic number.

It is not a de Polignac number, because 10000021000061 - 2³⁴ = 9982841130877 is a prime.

It is a super-2 number, since 2×10000021000061² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000021000031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120847181 + ... + 120929901.

It is an arithmetic number, because the mean of its divisors is an integer number (641471388768).

Almost surely, 2^{10000021000061} is an apocalyptic number.

It is an amenable number.

10000021000061 is a deficient number, since it is larger than the sum of its proper divisors (263521220227).

10000021000061 is an equidigital number, since it uses as much as digits as its factorization.

10000021000061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88372.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10000021000061 its reverse (16000012000001), we get a palindrome (26000033000062).

The spelling of 10000021000061 in words is "ten trillion, twenty-one million, sixty-one", and thus it is an aban number and an uban number.