1021212122 has 16 divisors (see below), whose sum is σ = 1754817792. Its totient is φ = 436620240.

The previous prime is 1021212113. The next prime is 1021212131. The reversal of 1021212122 is 2212121201.

It is an interprime number because it is at equal distance from previous prime (1021212113) and next prime (1021212131).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1021212097 and 1021212106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80738 + ... + 92525.

It is an arithmetic number, because the mean of its divisors is an integer number (109676112).

Almost surely, 2^1021212122 is an apocalyptic number.

1021212122 is a deficient number, since it is larger than the sum of its proper divisors (733605670).

1021212122 is a wasteful number, since it uses less digits than its factorization.

1021212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173693.

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

The square root of 1021212122 is about 31956.4097169879. The cubic root of 1021212122 is about 1007.0212933925.

Adding to 1021212122 its reverse (2212121201), we get a palindrome (3233333323).

The spelling of 1021212122 in words is "one billion, twenty-one million, two hundred twelve thousand, one hundred twenty-two".