1210222021021 has 16 divisors (see below), whose sum is σ = 1314373449088. Its totient is φ = 1107677592000.

The previous prime is 1210222021003. The next prime is 1210222021037. The reversal of 1210222021021 is 1201202220121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1210222021021 - 2¹⁵ = 1210221988253 is a prime.

It is a super-3 number, since 3×1210222021021³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210222020986 and 1210222021004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210222021081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492190 + ... + 1631776.

It is an arithmetic number, because the mean of its divisors is an integer number (82148340568).

Almost surely, 2^{1210222021021} is an apocalyptic number.

It is an amenable number.

1210222021021 is a deficient number, since it is larger than the sum of its proper divisors (104151428067).

1210222021021 is a wasteful number, since it uses less digits than its factorization.

1210222021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140292.

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

Adding to 1210222021021 its reverse (1201202220121), we get a palindrome (2411424241142).

The spelling of 1210222021021 in words is "one trillion, two hundred ten billion, two hundred twenty-two million, twenty-one thousand, twenty-one".