2120001212122 has 4 divisors (see below), whose sum is σ = 3180001818186. Its totient is φ = 1060000606060.

The previous prime is 2120001212083. The next prime is 2120001212129. The reversal of 2120001212122 is 2212121000212.

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., 1924654007761 + 195347204361 = 1387319^2 + 441981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120001212096 and 2120001212105.

It is not an unprimeable number, because it can be changed into a prime (2120001212129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530000303029 + ... + 530000303032.

Almost surely, 2^{2120001212122} is an apocalyptic number.

2120001212122 is a deficient number, since it is larger than the sum of its proper divisors (1060000606064).

2120001212122 is a wasteful number, since it uses less digits than its factorization.

2120001212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060000606063.

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

Adding to 2120001212122 its reverse (2212121000212), we get a palindrome (4332122212334).

The spelling of 2120001212122 in words is "two trillion, one hundred twenty billion, one million, two hundred twelve thousand, one hundred twenty-two".