221020000102012 has 6 divisors (see below), whose sum is σ = 386785000178528. Its totient is φ = 110510000051004.

The previous prime is 221020000102009. The next prime is 221020000102079. The reversal of 221020000102012 is 210201000020122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221020000101983 and 221020000102001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27627500012748 + ... + 27627500012755.

Almost surely, 2^{221020000102012} is an apocalyptic number.

It is an amenable number.

221020000102012 is a deficient number, since it is larger than the sum of its proper divisors (165765000076516).

221020000102012 is a wasteful number, since it uses less digits than its factorization.

221020000102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55255000025507 (or 55255000025505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221020000102012 its reverse (210201000020122), we get a palindrome (431221000122134).

The spelling of 221020000102012 in words is "two hundred twenty-one trillion, twenty billion, one hundred two thousand, twelve".