1021003200122 has 4 divisors (see below), whose sum is σ = 1531504800186. Its totient is φ = 510501600060.

The previous prime is 1021003200067. The next prime is 1021003200143. The reversal of 1021003200122 is 2210023001201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1003941876961 + 17061323161 = 1001969^2 + 130619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1021003200097 and 1021003200106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255250800029 + ... + 255250800032.

Almost surely, 2^{1021003200122} is an apocalyptic number.

1021003200122 is a deficient number, since it is larger than the sum of its proper divisors (510501600064).

1021003200122 is an equidigital number, since it uses as much as digits as its factorization.

1021003200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510501600063.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1021003200122 its reverse (2210023001201), we get a palindrome (3231026201323).

The spelling of 1021003200122 in words is "one trillion, twenty-one billion, three million, two hundred thousand, one hundred twenty-two".