121221201022 has 8 divisors (see below), whose sum is σ = 181979515872. Its totient is φ = 60561362400.

The previous prime is 121221201001. The next prime is 121221201029. The reversal of 121221201022 is 220102122121.

It is a happy number.

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

It is a super-2 number, since 2×121221201022² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121221200987 and 121221201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221201029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24615979 + ... + 24620902.

It is an arithmetic number, because the mean of its divisors is an integer number (22747439484).

Almost surely, 2^121221201022 is an apocalyptic number.

121221201022 is a deficient number, since it is larger than the sum of its proper divisors (60758314850).

121221201022 is a wasteful number, since it uses less digits than its factorization.

121221201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49238114.

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

Adding to 121221201022 its reverse (220102122121), we get a palindrome (341323323143).

The spelling of 121221201022 in words is "one hundred twenty-one billion, two hundred twenty-one million, two hundred one thousand, twenty-two".