1202111212122 has 40 divisors (see below), whose sum is σ = 2693712321300. Its totient is φ = 400689939456.

The previous prime is 1202111212111. The next prime is 1202111212129. The reversal of 1202111212122 is 2212121112021.

1202111212122 is a `hidden beast` number, since 120 + 211 + 1 + 212 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1195722567081 + 6388645041 = 1093491^2 + 79929^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1202111212095 and 1202111212104.

It is not an unprimeable number, because it can be changed into a prime (1202111212129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5301204 + ... + 5523312.

Almost surely, 2^{1202111212122} is an apocalyptic number.

1202111212122 is an abundant number, since it is smaller than the sum of its proper divisors (1491601109178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1202111212122 is a wasteful number, since it uses less digits than its factorization.

1202111212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255532 (or 255523 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1202111212122 its reverse (2212121112021), we get a palindrome (3414232324143).

The spelling of 1202111212122 in words is "one trillion, two hundred two billion, one hundred eleven million, two hundred twelve thousand, one hundred twenty-two".