121210022021 has 8 divisors (see below), whose sum is σ = 133040338464. Its totient is φ = 109514909520.

The previous prime is 121210021987. The next prime is 121210022029. The reversal of 121210022021 is 120220012121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121210022021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121210021987 and 121210022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210022029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33799106 + ... + 33802691.

It is an arithmetic number, because the mean of its divisors is an integer number (16630042308).

Almost surely, 2^121210022021 is an apocalyptic number.

121210022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121210022021 is a deficient number, since it is larger than the sum of its proper divisors (11830316443).

121210022021 is a wasteful number, since it uses less digits than its factorization.

121210022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67601971.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121210022021 its reverse (120220012121), we get a palindrome (241430034142).

The spelling of 121210022021 in words is "one hundred twenty-one billion, two hundred ten million, twenty-two thousand, twenty-one".