22202001212121 has 24 divisors (see below), whose sum is σ = 33466376810880. Its totient is φ = 14156744021376.

The previous prime is 22202001212107. The next prime is 22202001212143. The reversal of 22202001212121 is 12121210020222.

It is a happy number.

22202001212121 is a `hidden beast` number, since 2 + 220 + 200 + 121 + 2 + 121 = 666.

It is not a de Polignac number, because 22202001212121 - 2⁶ = 22202001212057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22202001212094 and 22202001212103.

It is not an unprimeable number, because it can be changed into a prime (22202001216121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1199541 + ... + 6770738.

It is an arithmetic number, because the mean of its divisors is an integer number (1394432367120).

Almost surely, 2^{22202001212121} is an apocalyptic number.

It is an amenable number.

22202001212121 is a deficient number, since it is larger than the sum of its proper divisors (11264375598759).

22202001212121 is a wasteful number, since it uses less digits than its factorization.

22202001212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7983765 (or 7983762 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22202001212121 its reverse (12121210020222), we get a palindrome (34323211232343).

The spelling of 22202001212121 in words is "twenty-two trillion, two hundred two billion, one million, two hundred twelve thousand, one hundred twenty-one".