1211020220122 has 8 divisors (see below), whose sum is σ = 1816537204116. Its totient is φ = 605507818752.

The previous prime is 1211020220107. The next prime is 1211020220143. The reversal of 1211020220122 is 2210220201121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1205672076961 + 5348143161 = 1098031^2 + 73131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1211020220096 and 1211020220105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383623 + ... + 1602874.

Almost surely, 2^{1211020220122} is an apocalyptic number.

1211020220122 is a deficient number, since it is larger than the sum of its proper divisors (605516983994).

1211020220122 is a wasteful number, since it uses less digits than its factorization.

1211020220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291312.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1211020220122 its reverse (2210220201121), we get a palindrome (3421240421243).

The spelling of 1211020220122 in words is "one trillion, two hundred eleven billion, twenty million, two hundred twenty thousand, one hundred twenty-two".