221020000102010 has 32 divisors (see below), whose sum is σ = 405804532612752. Its totient is φ = 86641019112960.

The previous prime is 221020000102009. The next prime is 221020000102079. The reversal of 221020000102010 is 10201000020122.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 179927374517401 + 41092625584609 = 13413701^2 + 6410353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 221020000101982 and 221020000102000.

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, 237288251 + ... + 238217870.

Almost surely, 2^{221020000102010} is an apocalyptic number.

221020000102010 is a deficient number, since it is larger than the sum of its proper divisors (184784532510742).

221020000102010 is a wasteful number, since it uses less digits than its factorization.

221020000102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475507058.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 221020000102010 its reverse (10201000020122), we get a palindrome (231221000122132).

The spelling of 221020000102010 in words is "two hundred twenty-one trillion, twenty billion, one hundred two thousand, ten".