1020221221010 has 16 divisors (see below), whose sum is σ = 1836557415000. Its totient is φ = 408053106816.

The previous prime is 1020221220979. The next prime is 1020221221013. The reversal of 1020221221010 is 101221220201.

1020221221010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1003737485689 + 16483735321 = 1001867^2 + 128389^2 .

It is not an unprimeable number, because it can be changed into a prime (1020221221013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4301435 + ... + 4532414.

Almost surely, 2^{1020221221010} is an apocalyptic number.

1020221221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020221221010 is a deficient number, since it is larger than the sum of its proper divisors (816336193990).

1020221221010 is a wasteful number, since it uses less digits than its factorization.

1020221221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8845405.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1020221221010 its reverse (101221220201), we get a palindrome (1121442441211).

The spelling of 1020221221010 in words is "one trillion, twenty billion, two hundred twenty-one million, two hundred twenty-one thousand, ten".