1202102122221 has 240 divisors, whose sum is σ = 2428848309888. Its totient is φ = 575352460800.

The previous prime is 1202102122189. The next prime is 1202102122241. The reversal of 1202102122221 is 1222212012021.

It is a happy number.

1202102122221 is a `hidden beast` number, since 1 + 20 + 210 + 212 + 2 + 221 = 666.

It is not a de Polignac number, because 1202102122221 - 2⁵ = 1202102122189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202102122194 and 1202102122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202102122241) by changing a digit.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1076187555 + ... + 1076188671.

Almost surely, 2^{1202102122221} is an apocalyptic number.

1202102122221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202102122221 is an abundant number, since it is smaller than the sum of its proper divisors (1226746187667).

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

1202102122221 is a wasteful number, since it uses less digits than its factorization.

1202102122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194 (or 2172 counting only the distinct ones).

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

Adding to 1202102122221 its reverse (1222212012021), we get a palindrome (2424314134242).

The spelling of 1202102122221 in words is "one trillion, two hundred two billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-one".